Short Answers with Auxiliaries

What Is It?

Short Answers with Auxiliaries refers to brief answers that match the auxiliary, modal, or be-verb in the question.

B1-B2 reference topic in Questions and Responses.

Why Use It?

Answer naturally across tenses.
Avoid repeating long verb phrases.
Show agreement or contrast clearly.

Formation and Patterns

Use	Pattern	Example
Perfect	`Yes, S + have/has/had`	Yes, I have.
Progressive	`No, S + be + not`	No, they aren't.
Modal	`Yes/No, S + modal`	Yes, we can. No, she shouldn't.

Common Mistakes

Answering with the main verb instead of the auxiliary.
Using a different tense from the question.
Contracting positive short answers where a full form is more natural.

Exceptions & Nuances

Auxiliary echoing also appears in replies: I think so. I hope not.