Gửi bn:

1. It has been years since we last traveled abroad.

⇒We haven’t traveled abroad for years

2. I haven’t watched TV for a week.

⇒ The last time I watched TV was a week ago.

3.We owned this house two years ago.

⇒We have lived in this house for 2 years

4. We have never met him before.

⇒ It's the first time we have met him

5. It started to rain at 2 p.m.

⇒It has rained since 2p.m

6.When did you start working here?

⇒How long have you worked here?

7.Dave has written a composition for two hours.

⇒Dave started  to write a composition 2 hours ago

8.How long have you been learning English?

⇒When did you start to learn English?

9.Keith started driving a car five years ago.

⇒Keith has driven a car for 5 years

10.This is the first time I have ever eaten this kind of food.

⇒ I have never eaten this kind of food before.

Cấu trúc toàn bài thì quá khứ đơn và hiện tại hoàn thành :

Since + mốc thời gian

For + khoảng thời gian

$\left \{ {{This is the first time + S + have/has + P2 (PP)} \atop {It is  the first time + S + have/has + P2 (PP)}} \right.$

$\left \{ {{S + have/has + never + P2 (PP) + before} \atop {S + have/has not + P2 (PP) + before}} \right.$

cách chuyển câu dạng quá khứ sang hiện tại hoàn thành (và ngược lại )

1. This is the first time +S+  hiện tại hoàn thành   (đây là lần đầu tôi ...... )

=> S+ have/has  never +v( chia hoàn thành )+ before. ( tôi chưa bao giờ ..... trước đây )

2. S+  started / begun +ving+.... ago. (tôi bắt đầu .............)

=> S + hiện tại hoàn thành . ( tôi ............. )

3.The last time +S+ quá khứ .   (lần cuối ................)

=> S+  + hiện tại hoàn thành( đã ko......... )

1. It has been years since we last traveled abroad.

We haven’t traveled aboard since 

2. I haven’t watched TV for a week.

The last time I watched TV was a week ago 

3. We bought this house two years ago.

We have lived in this house for two years .

4. We have never met him before.

It’s the last time we met him.

5. It started to rain at 2 p.m.

It has rained since two p.m.

6. When did you start working here?

How long have you worked here?

7. Dave has written a composition for two hours.

Dave started writting a composition two years ago.

. How long have you been learning English?

When did you start learning English?

9. Keith started driving a car five years ago.

Keith has driven a car for five years 

10. This is the first time I have ever eaten this kind of food.

I have never eaten this kind of food before.