四、使用非谓语动词应注意的问题
1、不定式作状语时常用的句型。动词不定式在句中可用来作目的、结果、原因状语,常用于下列句型中:
(1) in order to和so as to do(以便,为了):
She decided to work harder in order (so as) to catch up with the others. 她决心加紧学习,好赶上别人。
(2)too……to do……(非常…… 以至于不能……)
The boy is too young to join the navy.这男孩太小参不了海军。
(3) ……enough to do……(足以做……)
The hall is big enough to hold 1,000 people.这厅大得足以容纳一千人.
(4)only to do……(不料却……)
They lift a rock only to drop it on their own feet.他们搬起石头却砸自己的脚。
(5)"be+情绪形容词+to do"这个结构,不定式说明产生这一情绪的原因。
We are proud to be trained here in China.在中国受训我们感到自豪。