Padd Solutions

Converted by Falcon Hive

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Remember that THE SIMPLE PAST TENSE describes an action which took place at a definite time in the past. THE PRESENT PERFECT TENSE emphasizes the effects of a past action. It does not point to a definite past time.

I ---> have ---> studied.
He ---> has ---> studied.

Study these sentences:

I have studied my lesson { Present Perfect}
I studied my lesson { Simple Past}

He has taken an examination {Present Perfect}
He took an examination { Simple Past}

They have called a taxi { Present Perfect}
They called a taxi at ten o'clock {Simple Past}

He has answered the e-mail {Present Perfect}
He answered the letter Monday {Simple Past}


To form the negative, place NOT after the auxiliary verb.

I have studied my lesson ---> I have not studied my lesson ---> I haven't studied my lesson

He has gone to town ---> He has not gone to town ---> He hasn't gone to town

They have taken the examination ---> They have not taken the examination ---> They haven't taken the examination.

To form a question, place the auxiliary verb before the subject.

I have studied my lesson ---> Have I studied my lesson?

He has gone to town ---> Has he gone to town?

They have taken the examination ---> Have they taken the examination?

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