1. Some of Bill's classmates were invited to his birthday party.

S + was/were +V3/ed (bị động - thì QKD)

2. Ann asked her brother if he had written his lesson carefully.

S + asked + O + if/whether + S +V (lùi thì)

QKĐ --> QKHT

3. If you go to the link, you can find many useful things for your groupwork.

If 1: If + HTĐ, S + will/can/shall + V1 

4. I wish Paul could go on the trip with us.

S + wish(es) + S + could + V1: ước ở hiện tại 

5. Men drive more carelessly than women.

S + V + more + long-adv + than + O : ss hơn 

6. Although my grandpa is old, he leads an active life.

Although + clause. clause: mặc dù 

`color{orange}{~LeAiFuRuiHuiBao~}`