giúp em đổi câu từ 1 đến 6 ạ

Các công thức đổi HTHT - QKĐ

Structure 1: 

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

--> It is / has been + time + since + S+ (last) + V2/ed 

Structure 2:

S + has/have + V3/ed + for/since + time 

--> S + started / began + to V / Ving 

--> It is / has been + time + since + S+ V2/ed 

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1. Mary has played the piano for 4 years.

2. It's 5 years since my father last went to Hanoi.

3. My father has been reading for 2 hours.

4. I have written her for four years.

5. It's over a year since I last went to see them.

6. The last game is more boring than this one.

S + be + more + ADJ + than + O : so sánh hơn

`color{orange}{~LeAiFuRuiHuiBao~}`