TACHS Language : Case

Study concepts, example questions & explanations for TACHS Language

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Example Questions

Example Question #2 : Tachs: Language

Select from the given options the one that includes a usage error. If all of the options are correct, select "no mistakes."

Possible Answers:

No mistakes

I have no clear idea who I am speaking to.

Excuse me, could you say that again?

Listen, I'm reaching the limits of my patience.

Correct answer:

I have no clear idea who I am speaking to.


The correct choice features a very common error of pronoun case, which leads the sentence to incorrectly conclude with a preposition. Rather than using the subjective-case "who" in saying "who I am speaking to," it is correct to use the objective-case "whom." Sentences should never, in academic writing, end with a preposition.

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