1. She last met her parents 2 years ago.
-> She hasn't met her parents for 2 years.
2. After I had finished my homework, I went out.
-> Having finished my homework, I went out.
3. Peter has already cleaned his messy room.
-> Peter's messy room has been already cleaned.
4. My boyfriend would rather hang out with his friends than watch TV at home.
-> My boyfriend prefers hanging out with his friends to watching TV at home.
5. You helped her with her housework. She thanked you for that.
-> She thanked you for having helped her with her housework.