一般情況下直接+ing
eg:crying jumping eating...
結(jié)尾為一個輔音一個元音一個輔音結(jié)尾的,把末尾字母雙寫加ing（除元音加y）
eg:running stuying buying...
兩個動詞連一起,第二個要改成-ing形式.
介詞后面的動詞要改成-ing形式
動詞用作名詞如動詞作主語要改成-ing形式.
輔音字母+e結(jié)尾的單詞要去e加ing；
有些ie結(jié)尾的單詞如die,lie要把ie變成y加ing；
重音在最后一個音節(jié)的單詞,要末尾雙寫加ing；
還有就是幾個特殊的,就不說了.
一、 下列結(jié)構(gòu)含有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 …
二、 下列結(jié)構(gòu)用不帶to的動詞不定式：
1.had better (not) do sth.
2.would you please (not) do sth.
3.why not do sth.
4.why don’t you do sth.
5.Shall we do sth.
6.let do sth.
7.make sb.do sth.
三、 下列結(jié)構(gòu)用帶to的動詞不定式：
1.It’s time to do sth.
2.It takes sb.some time to do sth.
3.tell/ask/want/encourage sb.to do sth.
4.Would you like to do sth.
5.It’s good/bad to do sth.
6.It’s good/bad for sb.to do sth.
7.be+adj.+enough to do sth.
8.sb.is ready to do sth.
9.It’s+adj.+ for sb.to do sth.
10.It’s+adj.+ of sb.to do sth.
11.would like/love /decide/want/wish/to do sth.
12.would like/love sb.to do sth.
13.Prefer to do sth.rather than do sth.
I prefer to stay at home rather than go out.
14.what/how/ when/where/whether to do sth
15.can’t wait to do
16.too … to do …
17.be afraid /ready/able/sure to do
五、下列結(jié)構(gòu)用帶to的動詞不定式和ing形式含義不同：
1.stop to do/ doing
2.forget to do/ doing
3.remember to do/doing
4.go on to do/doing
5.like to do/doing
6.love to do/doing
7.prefer to do/doing
8.hate to do/doing
六、下列結(jié)構(gòu)用帶to的動詞不定式和ing形式含義相同：
1.begin to do/doing
2.start to do/doing
3.learn to do/doing
七、下列結(jié)構(gòu)用不帶to的動詞不定式和現(xiàn)在分詞的含義不同：
用不帶to的動詞不定式強調(diào)動作的完成過程；用現(xiàn)在分詞強調(diào)動作的進行狀態(tài).
1．hear sb do sth./doing
2.listen sb do sth./doing
3.look at sb do sth./doing
4.see sb do sth./doing
5.watch sb do sth./doing
6.notice sb do sth./doing
有重音,且最后1.個字母為輔音,倒數(shù)第二個為元音``
雙寫最后那個字母 +ing
有e結(jié)尾的去e +ing
剩下的都是直接+ing