1. He enjoys gardening... Sau eenjoy luôn là v-ing, Verb + v-ing chỉ đi vs động từ yêu ghét: enjoy, adore, dancy, don't mind,..
2.  She loves to collect/loves collecting...
3. what about going fishing this afternoon?
4. We encouraged people to recycle glass, cán and papers
S + encourage + O + to + V

1. He enjoys doing gardening at  the weekend 

- like+V-ing/ to_V= enjoy +V-ing : thích, hứng thú 

- do gardening: làm vườn

2. She loves collecting dolls 

- one's hobby= love+V-ing : thích 

3. What about going fishing this afternoon? 

- why don't we +V_inf= what/how about+V_ing: câu đề nghị làm gì 

4 . we encourages people to recycle glass ,cans and papers 

- suggest sb do st= encourage sb to do st: đề nghị, động viên ai đó làm gì