五、不定式作状语

不定式作状语修饰动词、形容词和副词，表示目的、结果和原因等。不定式作状语时，一般情况下句了的主语就是不定式的逻辑主语。如： 1.表示目的：

1. Tom comes every year to visit us.

2. Thousands of people go to south to earn money.

3. To save time and labor, cartoonists generally draw the hands of

   the characters with only three fingers and a thumb. (4)Over the centuries, various theories have been advanced to

explain the origin of alphbetic writing.

1. 中的 Tom 是 to visit us 的逻辑主语；(2)中的 Thousands of people 是 to earn money 的逻辑主语；(4)中的 theories 是 to explain the origin of alphabetic writing 的逻辑主语。

1. 表示结果：

He must be cripple not to wlak by himself. / It seems that the employee didn't sleep at allto be so sleepy in the early morning.

/ What have I done for you to deserve such an amount of money? 还有固定搭配的不定式表示结果：so⋯as to; such(⋯)as to⋯; enough to⋯; too⋯to⋯; in order to⋯等。如：We have got so plenty of food as to treat our guests. / Is that room big enough to seat all of us? / He is too young to fit that job.

1. 不定式表示原因：

It's very kind of you to say so. / I am pretty pleased to hear the news that you are elected as the president of the club. / I'm sorry to interrrupt you. / They are quite surprised to see the great changes taking place in the area.