Методическая разработка по английскому языку для студентов факультета химии и химической технологии " Simple Chemistry" Алматы 2017



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мет. разработка по химии

Unit 6


Present Perfect
Positive sentence

I/ You/ we/ they

He/ she/ it



Have

Has


Participle 2(Ved )(V3)



For example: I have read the book.


She has finished her work.
Negative sentences

I/ You/ we/ they

He/ she/ it



Have not (haven’t)

Has not (hasn’t)



Participle 2 (Ved )(V3)



For example: I haven’t read the book.


She hasn’t finished her work.

Questions



Have
Has

I/ You/we/they
He/she/it

Participle 2
Ved (V3)

For example: Have you read this book ?


Has she finished her work ?
Short form: I/you/we/they’ve
He/she/it’s
When we use this tense:

  • When we link the past with the present: Stan has written many letters to his sister. (He wrote many letters at some period of time before now and he may write more letters).

  • When we don’t’ specify the time: I have passed my exam. But if we specify the time we use Past Simple: I passed my exam two days ago.

  • When we use expressions which show that time is not finished (this week, this month, this year, today, this morning/evening): I haven’t seen him this month.

  • We use Present Perfect after the following expression:



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