1. They have lived in HCM City for two years. 

2. Nam has played the guitar since 4pm. 

3. I have learnt English since I was 5 years old. 

* Giải thích: Chuyển đổi câu ở thì QKĐ → Câu ở thì HTHT: 
+ S + started/began + V-ing + O + time ⇒ S + have/has + V-ed/P3 + O + for + time 

___________________________________________________________________

4. My father is fond of watching sports. 

5. Hoa is keen on reading comics. 

* Giải thích: Các cụm động từ chỉ sở thích 
+ tobe keen on 
+ tobe interested in 
+ tobe fond of 
+ ... 

$1. $ They have lived in Ho Chi Minh city for 2 years

$2. $ Nam has played the guitar since 4 p.m

$3. $ I have learnt English since I was 5 years old

$→$ Cấu trúc chung :

$→$ S + began / started + to V/ V-ing + time ago

$→$ S + have/has + P2 / been Ving+ for / since ...

$→$ Since + Mốc thời gian

$→$ For + Khoảng thời gian

$→$ I,you,we,they + Have

$→$ He,she,it + Has

$4. $ My father is interested in / fond of watching sports

$5. $ Hoa is interested in / fond of / keen on reading comics

$→$ Cấu trúc chung :

$→$ S + tobe + interested in + Ving

$→$ S + tobe + fond of  + Ving

$→$ S + tobe + keen on + Ving

$→$ Like/Love/Enjoy + Ving

`@NTHT`