to do非谓语用法总结（英语语法非谓语动词-to）

1.由来、形式、本质

1.1.形式

1.1.1.to do（主被动）—to be done（一般式）

1.1.2.to be doing—X（进行式）

1.1.3.to have done（主被动）—to have been done（完成式）

1.2.本质：n. adj. adv.

2.功能、出题特性

2.1.状语（eg:Cut down a little for supper to lose weight

2.1.1.目的：句首/句中——为了，来，以便...

2.1.2.原因：表示情感的形容词 be happy/sorry/astonished to do(惊讶的）

2.1.3.结果：only to do表“出乎意料的结果" be adj. enough to do

2.2.定语

2.2.1.名词后

2.2.1.1.表将来 He is locking for a house to live in

2.2.1.2.固定搭配:the ability/attempt/chance/oppotunity/desire/way to do

2.2.2.唯一最后（被序数词、最高级或no all any 等）：the only/the first/the greatest/the next to do

2.3.宾语

2.3.1.固定搭配：refuse/manage/want/hesitate/mean/continue/used/seem/regret/struggle/threaten to do

2.3.2.形式宾语：find/think/consider/feel it n./adj. to do

2.3.2.1.regret to do(遗憾去做）/doing(后悔做了）

2.3.2.2.mean to do（打算）/doing（意味着）

2.4.补语（宾补）

2.4.1.固定搭配：allow/permit/persuade/require/invite/encourage/remind/recommend somebody to do

2.4.2.感官动词/使役动词：sb. be seen/be found/be heard/be made to do

2.4.3.It's said that sb. do sth(据说某人...) sb. is said to do sth(某人句首...) sb. be considered/be believed/be thought/be reported to do

2.5.主语

2.5.1.It's/was adj. for(对于） sb. to do/of（品质） sb. to do

2.5.2.句型：It's takes time/fffort/energy to do sth

2.5.2.1.注意：It's no use doing

2.5.2.2.It's a waste of money/time doing(It's a/an n. to do)

2.6.表语

2.6.1.My job is to teach

2.6.2.固定：be to blame/wish/idea/task/purpose/duty

3.符号：带to/不带to

3.1.I ofen hear him sing the song(某些使役动词或感官动词）谓语v.为被动时要加to

3.1.1.feel

3.1.2.listen to/hear

3.1.3.make/have/let

3.1.4.see/watch/observe/look at/notice

3.2.had better do sth

3.3.Why not do sth?

3.4.would rather do than do/prefer to do rather than do

3.5.在but/except/besides后时，有do无to，有to无do

4.主动表被动

4.1.句子主语与不定式是主动关系 We have a lot of work to do

4.2.be adj. to do The water is not suitable for people to drink

4.3.疑问代词 to do What to do next hasn't been decided

4.4.to be blame Jim is to blame for the accident

4.5.当不定式的逻辑主语不清楚，且在语意上无大区别to do /to be done

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