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Yes.he has Yes，he did No，he hasn't No，he didn't
you don’t; has finished don't; has finished not to; didn’t finish not; hasn’t finished
to have finished to finish to be finished to have been finished
you don’t; has finished don't; has finished not to; didn’t finish not; hasn’t finished
mustn't haven't didn't hasn't
if Tom doesn’t have if Tom has unless Tom doesn’t have unless Tom hasn’t
isn’t he is he hasn’t he has he
wasn’t it hasn’t it isn’t it hasn’t he
shouldn't may not can't needn't
ought ought to ought to have ought to have finished
mustn’t didn’t needn’t hasn’t
mustn’t haven’t didn’t hasn’t
can’t mustn’t needn’t shouldn’t
shouldn't may not can't needn't
isn't hasn't doesn't haven't
has written; is finished wrote; is being finished has been writing; hasn’t been finished has been writing; hasn’t finished
does doesn’t hasn’t isn’t
can’t mustn’t needn’t shouldn’t
ought ought to ought to have ought to have finished
is; No, he isn't has; Yes, he has isn’t; Yes, he is hasn’t; No, he hasn't
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