Mandarin Chinese 1 Quiz: Completed Action Marker Le
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Completed Action Marker LeQuestion 1 of 10

Xiǎo Míng is telling his friend about his day. He says: 'Wǒ chī   fàn, rán hòu qù túshūguǎn.' (I ate, then went to the library.)

Which word or phrase correctly fills in the blank to show that Xiǎo Míng completed eating before going to the library, using 了 as a completed-action verb-suffix marker?

le (了) — Wǒ chī le fàn, rán hòu qù túshūguǎn. (我吃了饭，然后去图书馆。)
fàn le — moving 了 to end: Wǒ chī fàn le, rán hòu qù túshūguǎn. (我吃饭了，然后去图书馆。)
Nothing before fàn; le after qù — Wǒ chī fàn, rán hòu qù le túshūguǎn. (我吃饭，然后去了图书馆。)
guò (过) — Wǒ chī guò fàn, rán hòu qù túshūguǎn. (我吃过饭，然后去图书馆。)
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Mandarin Chinese 1 Quiz

Mandarin Chinese 1 Quiz: Completed Action Marker Le

Practice Completed Action Marker Le in Mandarin Chinese 1 with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Completed Action Marker Le, giving you a quick way to practice the rules, question types, and explanations that matter most for Mandarin Chinese 1.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

Xiǎo Míng is telling his friend about his day. He says: 'Wǒ chī   fàn, rán hòu qù túshūguǎn.' (I ate, then went to the library.)

Which word or phrase correctly fills in the blank to show that Xiǎo Míng completed eating before going to the library, using 了 as a completed-action verb-suffix marker?

  1. le (了) — Wǒ chī le fàn, rán hòu qù túshūguǎn. (我吃了饭，然后去图书馆。) (correct answer)
  2. fàn le — moving 了 to end: Wǒ chī fàn le, rán hòu qù túshūguǎn. (我吃饭了，然后去图书馆。)
  3. Nothing before fàn; le after qù — Wǒ chī fàn, rán hòu qù le túshūguǎn. (我吃饭，然后去了图书馆。)
  4. guò (过) — Wǒ chī guò fàn, rán hòu qù túshūguǎn. (我吃过饭，然后去图书馆。)
Explanation: When you see a question about 了 (le) in Mandarin, the first thing to ask yourself is: where does 了 appear, and what role is it playing? Chinese uses 了 in two distinct ways — as a verb-suffix (directly after the verb, marking completion of that specific action) and as a sentence-final particle (at the end of a sentence, signaling a change of state or new situation). This question specifically asks for 了 as a verb-suffix. Answer A is correct because placing 了 immediately after 吃 (chī) and before the object 饭 (fàn) — giving 吃了饭 — marks the eating action itself as completed. This is the classic verb-suffix structure: Verb + 了 + Object. It cleanly communicates that Xiǎo Míng finished eating before heading to the library. Answer B moves 了 to after 饭, making it a sentence-final particle rather than a verb-suffix. That structure (吃饭了) implies a change of state — "it's time to eat" or "eating has become a reality" — not a sequenced completed action. It's grammatically valid Chinese, but it doesn't fulfill the question's requirement of using 了 as a verb-suffix marker. Answer C places 了 after 去, marking the going to the library as completed, not the eating. This misidentifies which action needs the completion marker and leaves the eating clause without any aspect marking. Answer D uses 过 (guò), which marks past experience — something done at least once in one's life — not simple sequential completion. Saying 吃过饭 implies "I've had the experience of eating," which is too vague for this context. Study tip: Remember the pattern V + 了 + O for sequential, completed actions in narrative contexts — if you see 了 drifting away from the verb, check whether it's doing a different job.

Question 2

Read the following two sentences:

  1. Wǒ hē le kāfēi. (我喝了咖啡。)

  2. Wǒ hē kāfēi le. (我喝咖啡了。)

Which of the following best describes the difference in meaning or emphasis between Sentence 1 and Sentence 2?

  1. Sentence 1 emphasizes that the action of drinking coffee was completed, while Sentence 2 suggests a change of state — such as implying the speaker now drinks coffee (perhaps they didn't before) or that they have just finished. (correct answer)
  2. Sentence 1 and Sentence 2 are completely identical in meaning; the position of 了 does not change anything about what either sentence communicates to a listener.
  3. Sentence 1 is incorrect because 了 must always appear at the end of the sentence, so only Sentence 2 is grammatically valid in standard Mandarin usage.
  4. Sentence 2 emphasizes that the action of drinking coffee was completed as a single step, while Sentence 1 implies the speaker used to drink coffee regularly as a habitual past action.
Explanation: Whenever you see a question about the particle 了 (le) in Mandarin, you need to ask yourself: where is 了 placed, and what does that position signal? In Mandarin, 了 has two distinct grammatical roles depending on its position. When 了 appears immediately after a verb (verb + 了), it acts as an aspect marker signaling that the action was completed — think of it like a checkmark on a task. So in Sentence 1, Wǒ hē le kāfēi, the 了 after 喝 tells you the drinking action was completed: "I drank coffee." When 了 appears at the end of a sentence, it functions as a sentence-final particle marking a change of state — something is new or different now. Sentence 2, Wǒ hē kāfēi le, therefore carries a nuance like "I drink coffee now" (implying a shift, perhaps from not drinking it before) or "I've just had coffee." This makes A the correct answer. B is wrong because position absolutely matters — these two sentences communicate meaningfully different things to a native speaker. C is incorrect; placing 了 directly after a verb is perfectly grammatical and extremely common in standard Mandarin. D reverses the logic entirely — Sentence 1 marks completion of a single action, and Sentence 2 signals a change of state, not habitual past action. As a study tip, remember this shortcut: verb + 了 = completed action; sentence-final 了 = something changed. This distinction appears frequently in Chinese grammar questions, so drilling both positions with example sentences will pay off quickly.

Question 3

Lì Lì wants to tell her classmate that she already finished her homework before coming to class. She tries to say this in Mandarin.

Which sentence best expresses that Lì Lì completed her homework (zuò zuòyè 做作业) before arriving at class, using 了 as a completed-action marker?

  1. Lì Lì zuò guò zuòyè, rán hòu lái shàngkè. (丽丽做过作业，然后来上课。)
  2. Lì Lì zuò zuòyè, rán hòu lái le shàngkè. (丽丽做作业，然后来了上课。)
  3. Lì Lì zuò le zuòyè, rán hòu lái shàngkè. (丽丽做了作业，然后来上课。) (correct answer)
  4. Lì Lì le zuò zuòyè, rán hòu lái shàngkè. (丽丽了做作业，然后来上课。)
Explanation: When working with Mandarin completion markers, the key question to ask yourself is: where does 了 go, and what job is it doing? In Mandarin, 了 (le) placed directly after a verb signals that the action was completed. This is called the aspect marker 了, and its position is critical — it must immediately follow the verb it modifies. In option C, 丽丽做了作业，然后来上课, 了 appears right after 做 (zuò, "to do"), forming 做了 — meaning "did/completed." This correctly tells us Lì Lì finished her homework before coming to class. That's your correct answer. Option A uses 过 (guò) instead of 了. While 过 also follows a verb, it means the speaker has had the experience of doing something at some point in life — not that it was completed recently before another event. Saying 做过作业 implies "has done homework before (at some point)" rather than "just finished homework." Option B places 了 after 来 (lái), so it modifies the act of coming to class rather than doing the homework. This shifts the completion marker to the wrong verb entirely, changing the meaning of the sentence. Option D places 了 before the verb 做, which is grammatically incorrect in Mandarin. 了 as a completion marker must come after the verb, never before it. Placing it before the verb makes the sentence nonsensical. A handy rule to remember: Verb + 了 = completed action. Whenever you need to show something was finished, attach 了 directly to the right verb — position is everything.

Question 4

A student translates 'I drank two cups of tea' as: 'Wǒ hē liǎng bēi chá le.' (我喝两杯茶了。) Why might a Mandarin teacher mark this sentence as awkward or imprecise for expressing a completed action?

  1. Because 了 should be placed before the object chá rather than at the end, giving the structure 'Wǒ hē liǎng bēi le chá' to correctly mark the completed action.
  2. Because 了 cannot be used with quantity expressions like liǎng bēi (two cups) in any position, so the sentence must omit the number and simply say 'Wǒ hē chá le.'
  3. Because the verb hē (drink) is a state verb and state verbs never take 了 as a completion marker in any position in a Mandarin sentence.
  4. Because 了 at the sentence-final position functions primarily as a change-of-state particle, not as a verb-complement completion marker; placing 了 after the verb (hē le liǎng bēi chá) more precisely marks the drinking action as completed. (correct answer)
Explanation: When dealing with 了 (le) in Mandarin, you need to recognize that it actually has two distinct grammatical functions, and confusing them is one of the most common mistakes learners make. The key distinction is this: verb-aspect 了 (placed directly after the verb) marks a specific action as completed, while sentence-final 了 (placed at the end) signals a change of state or new situation. The student's sentence 我喝两杯茶了 uses sentence-final 了, which sounds like "It's now the case that I've drunk two cups of tea" — implying a newly relevant situation rather than cleanly marking a discrete completed action. The more precise construction for "I drank two cups of tea" as a completed event is 我喝了两杯茶 (Wǒ hē le liǎng bēi chá), where 了 follows directly after the verb 喝. This is answer D, and it's correct because it identifies exactly this functional difference between the two positions of 了. Answer A is wrong because it invents a rule that doesn't exist — 了 placed before the object but after a quantity phrase isn't the standard correction, and 我喝两杯了茶 is ungrammatical. Answer B is wrong because 了 absolutely can co-occur with quantity expressions; in fact, having a specific quantity like 两杯 is often necessary for verb-aspect 了 to sound natural. Answer C is wrong because 喝 (drink) is an action verb, not a state verb — state verbs like 是 or 爱 resist aspect marking, but 喝 has no such restriction. As a study tip, always ask yourself: is 了 marking what happened (verb-aspect, post-verb) or what's now true (change-of-state, sentence-final)? Keeping these two roles separate will sharpen your Mandarin significantly.

Question 5

A student writes the following paragraph in Mandarin: 'Zuótiān wǒ qù le chāoshì. Wǒ mǎi le shuǐguǒ hé miànbāo. Rán hòu wǒ huí jiā zuò wǎnfàn.'

In the student's paragraph, the third sentence ('Rán hòu wǒ huí jiā zuò wǎnfàn') describes going home and making dinner. A teacher suggests adding 了 to better indicate completed sequential actions. Where should 了 be placed to mark BOTH actions (going home AND making dinner) as completed in sequence?

  1. After the full first verb phrase only: 'Rán hòu wǒ huí jiā le, zuò wǎnfàn.' (然后我回家了，做晚饭。)
  2. After each verb: 'Rán hòu wǒ huí le jiā, zuò le wǎnfàn.' (然后我回了家，做了晚饭。) (correct answer)
  3. Before both verbs: 'Rán hòu wǒ le huí jiā, le zuò wǎnfàn.' (然后我了回家，了做晚饭。)
  4. At the very end of the sentence only: 'Rán hòu wǒ huí jiā zuò wǎnfàn le.' (然后我回家做晚饭了。)
Explanation: When working with 了 (le) in Mandarin, it helps to understand that it functions as a completion marker attached directly after a verb (or verb + object unit) to signal that action is finished. This question tests whether you know where 了 grammatically belongs in a sentence with two sequential verbs. In a sentence with two separate verb phrases like "huí jiā" (go home) and "zuò wǎnfàn" (make dinner), placing 了 immediately after each verb — huí le jiā, zuò le wǎnfàn — clearly marks both actions as individually completed in sequence. This is answer B, the correct choice. Here's why the other options fail: A places 了 only after the full first phrase ("huí jiā le"), which marks going home as complete but leaves "zuò wǎnfàn" without a completion marker — dinner-making is left grammatically unresolved. C places 了 before the verbs, which is grammatically impossible in Mandarin — 了 must follow the verb, never precede it. This is a fundamental structural error. D places a single 了 at the very end of the sentence, which actually carries a different nuance — it suggests a change of situation or new state (the "currently relevant 了") rather than cleanly marking both individual actions as completed in a sequence. A handy tip: think of 了 as a "stamp" you press right after each verb you want to mark complete. In sequential action sentences, each verb gets its own stamp. Watch for answer choices that move 了 to unusual positions — that's almost always a trap.

Question 6

A student is confused about when 了 is NOT needed after a verb. Which of the following sentences is correctly written WITHOUT 了, because the context does not call for the completed-action marker?

  1. Describing a specific past action with a definite object: 'Wǒ zuótiān kàn nà běn shū.' (我昨天看那本书。) — I read that book yesterday.
  2. Describing a past habitual action: 'Wǒ xiǎo shíhou měitiān chī mǐfàn.' (我小时候每天吃米饭。) — When I was a child, I ate rice every day. (correct answer)
  3. Stating a completed purchase last week: 'Wǒ péngyou shàng xīngqī mǎi shǒujī.' (我朋友上星期买手机。) — My friend bought a phone last week.
  4. Describing a single completed action this morning: 'Wǒ jīntiān zǎoshang hē kāfēi.' (我今天早上喝咖啡。) — I drank coffee this morning.
Explanation: When deciding whether 了 is needed after a verb, ask yourself: is this action being presented as a single, bounded, completed event? If yes, 了 is typically required. If the action describes a habitual pattern, general truth, or ongoing routine — especially in the past — 了 is usually omitted. B is correct because "我小时候每天吃米饭" describes a habitual past routine, not a single completed event. The phrase "每天" (every day) signals repetition and pattern. Habitual actions don't have a single defined endpoint, so the completed-action marker 了 would actually sound unnatural here. This sentence is grammatically clean without it. A is a trap because it mentions a specific past action with a definite object ("那本书" — that book). This combination — past time word + definite object + single event — almost always calls for 了. The correct form would be "我昨天看了那本书." C is similarly problematic. "上星期买手机" describes a single, completed purchase — a specific transaction in the past. Omitting 了 makes this sentence feel incomplete or unnatural. It should be "我朋友上星期买了手机." D follows the same pattern as C and A. "今天早上喝咖啡" refers to one specific completed action this morning, so 了 is expected: "我今天早上喝了咖啡." Without it, the sentence sounds like something is missing. A useful rule of thumb: if you see 每天, 每年, 经常, or similar frequency words pointing to routine, 了 is usually unnecessary — those are your signals to omit the completion marker.

Question 7

Consider this exchange: A: Nǐ chī fàn le ma? (你吃饭了吗？) — Have you eaten? B: Wǒ   chī fàn. (我 吃饭。) — I haven't eaten yet.

Which word or phrase correctly fills in the blank so that Speaker B's response negates the completed action expressed in Speaker A's question?

  1. bù (不) — giving: Wǒ bù chī fàn. (我不吃饭。)
  2. méi (没) — giving: Wǒ méi chī fàn. (我没吃饭。) (correct answer)
  3. bù le (不了) — giving: Wǒ bù le chī fàn. (我不了吃饭。)
  4. bù shì (不是) — giving: Wǒ bù shì chī fàn. (我不是吃饭。)
Explanation: When negating actions in Mandarin Chinese, the key distinction is between negating habits or intentions versus negating completed actions. Speaker A's question uses "le" (了), which signals a completed action — so the response must address whether that action was actually completed. This is exactly why B) méi (没) is correct. "Méi" (没) is specifically used to negate completed or past actions, directly countering the "le" (了) in Speaker A's question. "Wǒ méi chī fàn" (我没吃饭) naturally means "I haven't eaten" — the action simply did not occur. Notice that when you use "méi" to negate a completed action, the "le" is dropped from the sentence, which is standard grammatical practice. A) bù (不) is a common trap because it's the most general negation word in Mandarin. However, "bù" negates habits, preferences, or future intentions — not completed actions. "Wǒ bù chī fàn" means "I don't eat" (implying a habitual refusal), which doesn't answer whether the eating happened. C) bù le (不了) is grammatically incorrect in this position. While "bù le" can appear in certain constructions, placing it before a verb like this isn't standard Mandarin structure — it's a nonsense combination here. D) bù shì (不是) means "is not" and is used to negate identity or classification ("I am not..."), making it completely inappropriate for negating an action. Your study tip: memorize this rule — méi negates completed actions, bù negates habits or intentions. When you see "le" (了) in a question, "méi" is almost always your negation tool in the response.

Question 8

Which of the following sentences is INCORRECT in its use of 了 (le) as a completed-action marker?

  1. Tā xiě le yī fēng xìn. (她写了一封信。) — She wrote a letter.
  2. Wǒmen kàn le nà bù diànyǐng. (我们看了那部电影。) — We watched that movie.
  3. Tā měitiān chī le zǎofàn. (她每天吃了早饭。) — She eats breakfast every day. (correct answer)
  4. Tā mǎi le xīn de shū. (他买了新的书。) — He bought a new book.
Explanation: When using 了 (le) as a completed-action marker in Mandarin, the key question to ask yourself is: does this sentence describe a specific, completed event, or does it describe a habitual or repeated action? These two contexts are grammatically incompatible with the completed-action 了. Option C is the incorrect sentence because it combines 每天 (měitiān, "every day") with 了 as a completion marker. 每天 signals a habitual, ongoing routine — something that happens repeatedly, not a single completed event. Using 了 here creates a contradiction: you cannot mark a recurring daily habit as a discrete completed action. The correct way to express this idea would be 她每天吃早饭 (Tā měitiān chī zǎofàn), simply dropping 了 entirely. Options A, B, and D are all grammatically sound. In A, 写了一封信 describes one specific completed act of writing a letter — a perfect use of 了. In B, 看了那部电影 refers to a specific movie that was watched on a particular occasion, again correctly marking completion. In D, 买了新的书 describes a single completed purchase, which is exactly the context where 了 belongs. A helpful strategy: whenever you see time expressions like 每天 (every day), 经常 (often), or 总是 (always) in a sentence, be suspicious of 了 appearing alongside them. These frequency adverbs almost always signal habitual actions, which don't pair with the completed-action 了. Spotting this mismatch will help you quickly identify errors on exam questions like this one.

Question 9

A student wants to say 'She bought three apples.' in Mandarin using 了 as a completed-action marker. Which sentence is the most grammatically accurate representation?

  1. Tā mǎi le sān ge píngguǒ. (她买了三个苹果。) (correct answer)
  2. Tā mǎi sān ge píngguǒ le. (她买三个苹果了。)
  3. Tā le mǎi sān ge píngguǒ. (她了买三个苹果。)
  4. Tā mǎi sān ge le píngguǒ. (她买三个了苹果。)
Explanation: When using 了 (le) as a completed-action marker in Mandarin, placement is everything. The grammatical particle 了 must directly follow the verb it modifies to signal that an action has been completed. Think of it as a tag attached to the verb itself, not floating freely in the sentence. This is exactly why A (她买了三个苹果) is correct. The structure is: Subject + Verb + 了 + Object. Here, 了 immediately follows 买 (mǎi, "to buy"), marking the purchase as a completed action. The numeral-measure word phrase 三个苹果 (sān ge píngguǒ, "three apples") then follows naturally as the object. This is the standard, textbook pattern for perfective 了. B is a common trap. Placing 了 at the end of the sentence (她买三个苹果了) is actually grammatically possible in Mandarin, but it functions as a change-of-state marker — signaling a new situation — rather than a completed-action marker. The question specifically asks for completed-action usage, so B misapplies the function of 了. C places 了 immediately after the subject (她了买三个苹果), which is simply ungrammatical. 了 cannot precede the verb as a standalone particle in this way. D inserts 了 between the number and the noun (她买三个了苹果), which breaks apart the numeral-measure-noun phrase. This structure doesn't exist in Mandarin grammar. Your study tip: memorize the two main positions of 了 — verb + 了 (completed action) vs. sentence-final 了 (change of state) — and always identify which meaning the question is testing before selecting your answer.

Question 10

Which of the following sentences uses 了 (le) to correctly express a completed action verb with a stated object, following standard introductory Mandarin grammar rules?

  1. Tiānqì lěng le. (天气冷了。) — The weather has gotten cold.
  2. Wǒ kàn le. (我看了。) — I looked/read. [no object stated]
  3. Wǒ xǐhuān le tā. (我喜欢了他。) — I liked him.
  4. Wǒ kàn le shū. (我看了书。) — I read a/the book. (correct answer)
Explanation: When studying 了 (le) in Mandarin, it's important to distinguish between its different grammatical functions. This question specifically tests your understanding of verbal 了, which marks a completed action and typically appears directly after the verb, before a stated object. The pattern you need to recognize is: Subject + Verb + 了 + Object. Answer D, Wǒ kàn le shū (我看了书), follows this structure perfectly — the verb 看 (kàn, "to read/look") is marked as completed with 了, and the object 书 (shū, "book") follows immediately after. This is the textbook example of verbal 了 with a stated object, making D the correct answer. Now let's look at why each other option falls short. A (Tiānqì lěng le) uses 了 correctly, but not with an action verb and object — here 了 follows an adjective (冷, "cold") to indicate a change of state. This is a different grammatical function of 了 entirely. B (Wǒ kàn le) does use verbal 了 after an action verb, but the question specifically asks for a completed action with a stated object, and no object appears here. C (Wǒ xǐhuān le tā) is the trickiest distractor — 喜欢 (xǐhuān, "to like") is a stative verb expressing an ongoing feeling or state, not a dynamic action. Stative verbs generally do not take verbal 了 in standard Mandarin, making this sentence unnatural. Your study tip: always ask two questions — Is the verb dynamic (action-based) or stative (state-based)? And does 了 follow the verb or the whole sentence? These distinctions unlock most 了 questions.