Unit 16. Past Perfect continous

A Hãy xem xét ví dụ sau:

Yesterday morning I got up and looked out of the window. The sun was shinning but the ground was very wet.

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Unit 15. Past perfect

A Xem ví dụ sau:

Sarah went to a party last week. Paul went to the party too but they didn’t see each other. Paul went home at 10.30 and Sarah arrived at 11 o’clock. So:

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Unit 14.
Present perfect and past (2)

A Chúng ta không dùng thì
present perfect (I have done) khi nói về một thời điểm đã kết thúc (chẳng hạn Yesterday, ten minutes ago, in 1985, When I was a child), mà khi đó chúng ta phải dùng thì quá khứ (past tense):

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Unit 13.
Present perfect and past (1)

A Xem xét ví dụ sau:

Tom is looking for his key. He can’t find it.

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Unit 12 When? How long? For and Since

A Hãy so sánh When..? (+ Past simple) và How long….? (+present perfect):

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Unit 11.
How long have you been ?

A Xét ví dụ sau:

Bob and Alice are married. They got married exactly 20 years ago, so today is the 20th wedding anniversary. They have been married for 20 years.

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Unit 10. Present perfect continuous and simple

A Nghiên cứu ví dụ sau:

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