下列结构只能用V-ing:
1. keep doing
2. keep /carry on doing
3. keep sb. Doing
4. enjoy doing
5. finish doing
6. be afraid of doing
7. be worth doing
8. be busy doing
9. how about doing//what about doing
10. spend some time (in)doing
11. spend some money (in) buying
12. feel like doing
13. stop/keep/prevent … from doing
14. thank you for doing
15. thanks for doing
16. do some
cooking/cleaning/reading/shopping/washing
17. go
swimming/fishing/shopping/skating/boating
18. mind/practise doing
19. prefer doing … to doing…
20. can’t help doing
21. there is/are +n.+ doing …
还有介词后面加n./pron./v-ing，也就是你说的加动词就加ing形式的bai，有几个要注意，这几个to是介词
pay attention to doing
be/get used to doing(习惯于)
end up doing
