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When do we use has, have, and had?



 
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ESL Forum | English Vocabulary, Grammar and Idioms
Pronunciation of "TUV" | "approve of" vs. "approve"
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When do we use has, have, and had? 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~!
Myc
I'm new here and I like it ;-)


Joined: 18 Dec 2006
Posts: 15

When do we use has, have, and had? 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
Bodum
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When do we use has, have, and had? 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"
Danial2007
I'm new here and I like it ;-)


Joined: 19 Dec 2006
Posts: 11

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

Hi myc

myc wrote:
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?

Has done is the present perfect tense of do. Your sentences mean the same thing to me:
If it is true that Bob did/has (already) done his homework, he can go out to play.

myc wrote:
You only use "has" when it's third person singular, right? she has, Bob has, ect.

Has is the present tense form of the verb have and is used with third person singular.
Has done is the present perfect of do in the third person singular.

myc wrote:
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?
The sentence means "John hoped to win the trophy, but he didn't."
"To have won" is the perfect infinitive of the verb win. I think this link might help you:
http://www.bartleby.com/116/214.html

Amy
Yankee
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Joined: 16 Apr 2006
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Pronunciation of "TUV" | "approve of" vs. "approve"
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