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Use of have/has in Present Perfect Negative sentences:
S + have/has +not+ V3 + O
S - subject: I, we, you, they, he, she, it, Mary, John…
V3 - the Past Participle of the verb (the verb in the third form): written, eaten, worked...
O - object
S - subject: I, we, you, they, he, she, it, Mary, John…
V3 - the Past Participle of the verb (the verb in the third form): written, eaten, worked...
O - object
S | have/has | not | V3 | O |
I | have | not | eaten | two apples |
We | have | not | eaten | two apples |
You | have | not | eaten | two apples |
They | have | not | eaten | two apples |
He | has | not | eaten | two apples |
She | has | not | eaten | two apples |
It | has | not | eaten | two apples |
Important!
Short forms:
have not = haven't
I have not eaten = I haven't eaten
have not = haven't
I have not eaten = I haven't eaten
has not= hasn't
She has not eaten = She hasn't eaten
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