UNIT 1 – 3 – TENSESCách 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