1 

-> i haven't spoken to her to her for 2 years 

-> thì HTHT + for 

-> S + have / has + vPII + for + 1 khoảng thời gian 

2 Tom failed the exam because he was lazy 

-> thì QKĐ 

-> because + S 

3 Unless you have flour, You can't make a cake

4  he asked me if I liked pop music

5 Nam spends two hours doing his homework everyday

-> spend + v-ing 

6 AlThough the weather is bad , we are going to have a picnic

-> cấu trúc although : although + s + v + s2 + v

7 these stamps have been collected by he 

-> bị động thì HTHT 

-> s + have / has + ( been ) + VPII + by + O 

7. I haven't spoken to her for 2 years

8. He failed the exam because he was very lazy

10. he asked if i liked pop music

11. Nam spends 2 hours doing his homework every day

12. Although the weather is bad, he went on a picnic

13. These stamps have been collected for 2 years