不定式做状语
不定式做状语用法如下:
不定式(to do)具有副词性质,可以在句中充当状语,表示目的、结果、原因等。
一、不定式充当目的状语,可替换为 in oder to, so as to, so (such) ... as to 等。举例:
He stood up to / in oder to / so as to be seen better. 他站起来以便大家能更清楚地看到他。
He ran so fast as to catch the first bus. 他跑得飞快以便能赶上首班车。
二、不定式充当结果状语。举例:
What have I said to make you angry? 我到底说啥了,让你这么生气?
He searched the room only to find nothing. 他满屋子找,却一无所获。
三、不定式充当原因状语。举例:
I'm glad to see you. 我很高兴见到你。
四、too...to... 结构,too 修饰形容词或副词,不定式表示否定含义。举例:
The box is too heavy for me to carry. 箱子太沉,我搬不动。
五、only too...to... 或否定词+too...to... 结构,too 修饰形容词或副词,不定式表示肯定含义。举例:
I am only too pleased to help you. 能帮助您,我感到十分荣幸!
We are never too old to learn. 活到老,学到老。
六、enough to... 结构,enough 后置修饰形容词或副词,意思是“足以……”。举例:
The boy is old enough to go to school. 孩子这么大了,该上学了。