1. I haven’t cutted my hair since last June.

-> sửa cutted thành cut (vì phân từ 2 của cut là cut)

2. She has not working as a teacher for almost 5 years.

-> sửa working -> worked (thì hiện tại hoàn thành)

3. The lesson haven’t started yet.

-> sửa haven't -> hasn't (the lesson là số ít)

4. Has the cat eat yet?

-> eat -> eaten (phân từ 2 là eaten)

5. I am worried that I still hasn’t finished my homework yet.

-> sửa hasn't -> haven't (đại từ nhân xưng I đi với have)

6. I have just decided to start working next week.

7. He has been at his computer since seven hours.

-> sửa since -> for (since là kể từ khi; for là đã được)

8. She hasn’t received any good news since a long time.

-> sửa since -> for (for a long time: được 1 khoảng tgian dài)

9. My father hasn’t played any sport for last year.

-> sửa for -> since 

10. I’d better have a shower. I hasn’t had one since Thursday.

-> sửa hasn't -> haven't

1. I haven’t cutted my hair since last June. 

-> cut ( cut ko thêm ed vì có trong bảng động từ bất quy tắc )

2. She has not working as a teacher for almost 5 years.

-> worked ( vì trong cấu trúc thì hiện tại hoàn thành có cấu trúc là S + have/has not + V3 )

3. The lesson haven’t started yet.

-> hasn't ( vì ta có cấu trúc: he/she/it + have/has not + V3 )

4. Has the cat eat yet?

-> eaten ( eat phải chuyển sang V3 là eaten, cấu trúc Have/ has + S + V3? )

5. I am worried that I still hasn’t finished my homework yet. 

-> haven't ( vì cấu trúc i/you/we/they + have/has not + V3 )

6. I have just decided to start working next week. ( ko có lỗi )

7. He has been at his computer since seven hours.

-> for ( vì since được dùng với thời gian như 6 o'clock, tuesday, 2002, last week.... còn for được dùng với 3 days, 5 weeks, two hours, a long time... )

8. He has been at his computer since seven hours. 

-> for ( vì since được dùng với thời gian như 6 o'clock, tuesday, 2002, last week.... còn for được dùng với 3 days, 5 weeks, two hours, a long time... )

9. My father hasn’t played any sport for last year.

-> since ( vì since được dùng với thời gian như 6 o'clock, tuesday, 2002, last week... còn for được dùng với 3 days, 5 weeks, two hours, a long time... )

10. I’d better have a shower. I hasn’t had one since Thursday. 

->haven't ( vì cấu trúc i/you/we/they + have/has not + V3 )