=>

1. Miss Jackson asked Tim to try his best to improve his pronunciation.

-> ask sb to V: yêu cầu ai làm gì

2. I learn English so as to be able to communicate with foreigners./I learn English so as to communicate with foreigners.

-> so as to V: để làm gì

3. My father told me not make to make so much noise.

-> told sb (not) to V: bảo ai (không) làm gì

4. They teach Maths well.

-> teach là động từ (cần trạng từ)

5. He is an active participant in outdoor activities.

-> be a/an adj N

6. We are going to join in an English club.

-> be going to V(dự định, kế hoạch)