EX16. Chia động từ trong ngoặc về thì quá khứ đơn hoặc hiện tại hoàn thành (thể khẳng định hoặc phủ định) sao cho phù hợp.

2. I (use to/ live) ____________ with my grandmother until I (be) ____________ 18. Since then, I (meet) ____________ my grandmother again.

3. My mother (work) ____________ as a teacher in the local high school for 20 years before her retirement.

4. The last time we (have) ____________ dinner together was 2 weeks ago.

5. My uncle (meet) ____________ his family since he (go) ____________ on a business trip last month.

6. Your friend Sarah (just/ phone) ____________ you. She (say) ____________ sorry because she (can/ come) ____________ to your party.

7. So far, I (already/ read) ____________ 11 different books. My most favourite book is “Paper towns” by John Green. I (finish) ____________ reading it last weekend.

8. Last night I (feel) ____________ well, so my father (take) ____________ me to hospital. I (be) ____________ out of hospital yet.

EX15. Chuyển các câu sau từ thì hiện tại hoàn thành sang thì quá khứ đơn sao cho nghĩa của câu không thay đổi

4. I haven’t mer my family since last Christmas.

=> ____________________________________________________________________.

5. How long have you lived here?

=> ____________________________________________________________________.

6. The volunteers have provided free food and fresh water to homeless people since yesterday.

=> ____________________________________________________________________.

7. The doctor has quitted his job in the local hospital and moved to the central hospital for 2 days.

=> ____________________________________________________________________.

8. The children haven’t had a long vacation since last year.

=> ____________________________________________________________________.

9. They haven’t visited their parents for 3 months.

=> ____________________________________________________________________.

10. It has been 2 years since we broke up.

=> ____________________________________________________________________.

EX15. Chuyển các câu sau từ thì hiện tại hoàn thành sang thì quá khứ đơn sao cho nghĩa của câu không thay đổi.

4. I haven’t mer my family since last Christmas.

=> ____________________________________________________________________.

5. How long have you lived here?

=> ____________________________________________________________________.

6. The volunteers have provided free food and fresh water to homeless people since yesterday.

=> ____________________________________________________________________.

7. The doctor has quitted his job in the local hospital and moved to the central hospital for 2 days.

=> ____________________________________________________________________.

8. The children haven’t had a long vacation since last year.

=> ____________________________________________________________________.

9. They haven’t visited their parents for 3 months.

=> ____________________________________________________________________.

10. It has been 2 years since we broke up.

=> ____________________________________________________________________.