Tiếng Anh 6

UNIT 1 – 3 – TENSES
Cách biến đổi câu từ thì Quá khứ đơn sang thì Hiện tại hoàn thành và ngược lại.
– I

S + (last) + VQKĐ – KĐ+…………..+ when …… / ago

↔ S + (last) + VHTHT – PĐ + ………… + since…… / for……. (bỏ last)


Rewrite the following sentences, using the words given:
Ex : - I last saw her when I was a student / 2 years ago.
(I haven’t seen her since I was a student / for 2 years.
We last saw Tom when I moved to Bristol.
(We haven’t .
She (last) wrote to me nearly 2 years ago.
(She hasn’t .
This film was (last) shown on TV nearly 10 years ago.
(This film .
She last swam in the river 3 years ago.
(She .
I last visited the city museum 5 years ago.
(I .
6. I haven’t attended the club since 1988.
(I last .
7.I haven’t seen him for 2 months.
(I last .
8. I haven’t gone swimming for 2 years.
( I last .

II.

The last time + S + V QKĐ – KĐ + ….. + was in (at….) / was …..ago

↔ S + V HTHT – PĐ … + since / for



Rewrite the following sentences, using the words given.
Ex : The last time I heard him was in August.
↔ I haven’t heard him since August.
1.The last time I played football was in 1970.
(I have .
2. The last time it rained was a fortnight ago.
(It has .
3. The last time Lucy wore that dress was at Barbara’s wedding.
(Lucy has .
4. The last time my father was to Vung Tau was 2 years ago.
(My father .
5.The last time Betty rode to work was a fortnight ago.
(Betty has .
6.He hasn’t played tennis since 1990.
(The last time .
7.I haven’t met her for 2 months.
(The last time .

B –

S + V QKĐ – start / begin + ………………… + ago

↔ S + V HTHT / HTHTTD + ………………… + since / for (bỏ start / begin)


Rewrite the following sentences, using the words given.
Ex: - He started workingfor this factory a year ago.
(He has been working for this factory since last year / for a year.
1.Tom began playing the piano 4 years ago.
(Tom has .
2. I started cooking for the party 4 hours ago.
(I have .
3. She started working as a secretary 2 years ago.
(She .
4. My father is reading a newspaper. He started 2 hours ago.
(My father .
5.My sister began to study English a year ago.
(My sister .
6.Scientists began to fight against AIDS in 1980.
(Scientists have .
7.The Browns have been living in London for 20 years.
(The Browns began .
8. John has worked for this electronics firm since 1999.
(John started .
9. Women have been fighting for their rights since the middle of the 20thcentury.
(Women began .
10. Jack and Jill have learned to drive for 2 weeks.
(Jack and Jill started .
11. How long have you studied English?
(When .
12. When did you begin to do research on lung cancer?
(How long .
C-

S + V HTHT – PĐ + ………… +before
↔ It / This is the first time + S + V HTHT – KĐ +………… (bỏ before)


Rewrite the following sentences, using the words given:
Ex : I haven’t seen that film before.
(It / This is the first time I have seen that film.
1.My father hasn’t driven a car before.
(This is the first time .
2.I’ve never met such a famous singer before.
(It’s the first time .
3.She has never been to the ballet before.
(It’s the first time .
4.She hasn’t drunk Coca Cola before.
(This is the first time .
5.I have never read this book before.
(It’s the first time .
6.I have never met such an intelligent student before.
(It’s the first time .
7.This is the first time my grandfather has been to