Bài tập thì Hiện tại hoàn thành chuyển sang thì Quá khứ đơn

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) + V QKĐ – KĐ +..+ when  / ago
↔ S + (last) + V HTHT – 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.
àI haven’t seen her since I was a student / for 2 years.
We last saw Tom when I moved to Bristol.
àWe haven’t	.
She (last) wrote to me nearly 2 years ago.
àShe hasn’t	.
This film was (last) shown on TV nearly 10 years ago.
àThis film	.
She last swam in the river 3 years ago.
àShe	.
I last visited the city museum 5 years ago.
àI	.
 6. I haven’t attended the club since 1988.
àI last	.
 7.I haven’t seen him for 2 months.
àI last	.
 8. I haven’t gone swimming for 2 years.
à 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.
àI have	.
2. The last time it rained was a fortnight ago.
àIt has	.
3. The last time Lucy wore that dress was at Barbara’s wedding.
àLucy has	.
4. The last time my father was to Vung Tau was 2 years ago.
àMy father	.
5.The last time Betty rode to work was a fortnight ago.
àBetty has	.
6.He hasn’t played tennis since 1990.
àThe last time	.
7.I haven’t met her for 2 months.
àThe 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 working for this factory a year ago.
àHe has been working for this factory since last year / for a year.
1.Tom began playing the piano 4 years ago.
àTom has	.
2. I started cooking for the party 4 hours ago.
àI have	.
3. She started working as a secretary 2 years ago.
àShe	.
4. My father is reading a newspaper. He started 2 hours ago.
àMy father	.
5.My sister began to study English a year ago.
àMy sister	.
6.Scientists began to fight against AIDS in 1980.
àScientists have	. 
7.The Browns have been living in London for 20 years.
àThe Browns began	.
8. John has worked for this electronics firm since 1999.
àJohn started	.
9. Women have been fighting for their rights since the middle of the 20th century.
àWomen began	.
10. Jack and Jill have learned to drive for 2 weeks.
àJack and Jill started	.
11. How long have you studied English?
àWhen	.
12. When did you begin to do research on lung cancer?
àHow 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.
àIt / This is the first time I have seen that film.
1.My father hasn’t driven a car before.
àThis is the first time	.
2.I’ve never met such a famous singer before.
àIt’s the first time	.
3.She has never been to the ballet before.
àIt’s the first time	.
4.She hasn’t drunk Coca Cola before.
àThis is the first time	.
5.I have never read this book before.
àIt’s the first time	.
6.I have never met such an intelligent student before.
àIt’s the first time	.
7.This is the first time my grandfather has been to hospital.
àMy grandfather has	.
D – 
S + V HTHT – PĐ + for + time
↔ It’s + time + since + S (last) + V QKĐ – KĐ + (bỏ for)
Rewrite the following sentences, using the words given.
Ex: I haven’t seen my father for one month.
àIt’s one month since I last saw my father.
1.Tom has not had his hair cut for over 3 months.
àIt’s	.
2.M father hasn’t been to Hanoi for 2 years.
àIt is	.
3.I haven’t enjoyed myself so much for years.
àIt is	.
4. I haven’t eaten this kind of food for 2 years.
àIt is	.
5.Mary hasn’t rung for hours.
àIt is	.
6.We haven’t seen him for 4 years.
àIt is	.
7.It’s over a year since I last went to see them.
àI haven’t	.
8.It’s more than ten years since I last played football.
àI haven’t	.