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

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UNIT 1 – 3 – TENSES

Cách biến đổi câu từ thì Quá khứ đơn sang thì Hiện tại hoàn thành và ngược lại.

A. – 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. I haven’t seen her since I was a student / for 2 years.

1. We last saw Tom when I moved to Bristol. We haven’t . 2. She (last) wrote to me nearly 2 years ago. She hasn’t . 3. This film was (last) shown on TV nearly 10 years ago. This film . 4. She last swam in the river 3 years ago. She . 5. 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 .

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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 working for 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 20th century. 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 …