2012英语四级语法讲义大全：非谓语动词五

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6）作状语：
0 X9 l. ~, `+ ~. i- C2 CA）表目的：
He worked day and night to get the money.
She sold her hair to buy the watch chain.
注意不定式放句首时，逻辑主语与句子主语要一致：
wrong：To save money, every means has been tried.
right: To save money, he has tried every means.
wrong：To learn English well, a dictionary is needed.
right: To learn English well, he needs a dictionary.
1 ~. \& J( E- L8 yB）表结果：
2 i8 A8 n3 S# `- F; W+ m& Z+ EHe arrived late to find the train gone.
' M' R+ v5 h# g$ c常用only放在不定式前表示强调：I visited him only to find him out.
C）表原因：
# R6 v+ D+ K* y' d; G4 u5 r, gThey were very sad to hear the news.
# `' ?6 J/ b1 L6 w5 [- HD）表程度：
It’s too dark for us to see anything.
The question is simple for him to answer.
7）作独立成分：
* F7 T3 l; @+ \+ nTo tell you the truth, I don’t like the way he talked.
/ u; |4 `5 B$ L! `: \( T3 ?8）不定式的省略：保留to省略do动词。
If you don’t want to do it, you don’t need to.
9 m& v& W3 l  L8 g! M+ [9）不定式的并列：第二个不定式可省略to。
) R( Q. |, e. p! [0 f4 bHe wished to study medicine and become a doctor.