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介词for用法完全归纳

用法1:(表目的)为了。

如:
They went out for a walk. 他们出去散步了。

What did you do that for? 你干吗这样做?
That’s what we’re here for. 这正是我们来的目的。

What’s she gone for this time? 她这次去干什么去了?
He was waiting for the bus. 他在等公共汽车。

【用法说明】在通常情况下,英语不用for doing sth 来表示目的。

如:他去那儿看他叔叔。

误:He went there for seeing his uncle.
正:He went there to see his uncle.
但是,若一个动名词已名词化,则可与for 连用表目的。

如:
He went there for swimming. 他去那儿游泳。

(swimming 已名词化) 注意:若不是表目的,而是表原因、用途等,则其后可接动名词。

(见下面的有关用法)
用法2:(表利益)为,为了。

如:
What can I do for you? 你想要我什么?
We study hard for our motherland. 我们为祖国努力学习。

Would you please carry this for me? 请你替我提这个东西好吗?
Do more exercise for the good of your health. 为了健康你要多运动。

【用法说明】(1) 有些后接双宾语的动词(如buy, choose, cook, fetch, find, get, order, prepare, sing, spare 等),当双宾语易位时,通常用for 来引出间接宾语,表示间接宾语为受益者。

如:。

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