When do we use has, have, and had?

Myc · Thu Dec 21, 2006 22:39 pm *When do we use has, have, and had?*

when do you use has, have, and had?

what is the difference between
if Bob did his homework, he can go out to play.

if Bob has done his homework, he can go out to play

"has done" is future perfect, does that imply that Bob will continue doing his homework in the future?
You only use "has" when it's third person singular, right? she has, Bob has, ect.
John had hoped to have won the trophy.
Does this mean, John hoped to win the trophy before the competition began? Why is it "to have won" ? I only know has won is wrong because it doesn't sound right, but John is third person singular so shouldn't it be "has" won?

Thanks~!

Bodum · Fri Dec 22, 2006 2:10 am *When do we use has, have, and had?*

when using perfect tense

present perfect tense

He, she , or It(3rd person singular) + has + past participle

I, you, we, they + have + past participle

Past perfect tense

doesn't matter whether 3rd person singular or not, always use had + past participle

"if Bob has done his homework" I don't think "has done" is future perfect tense, it is present perfect tense, and it doesn't imply that he will continue to do his homework. If you mean that he has done some of his homework but will continue . I guess it should be " Bob has been doing his homework"

"has won" is not wrong when using 3rd person singular in a present perfect tense

Danial2007 · Fri Dec 22, 2006 8:40 am *When do we use has, have, and had?*

hi myc
i think you'd better say " If Bob finishes (or has finished) the homework, he can go out to play"

Yankee · Fri Dec 22, 2006 10:56 am *When do we use has, have, and had?*

Hi myc

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