先来看一个例句:
It is careless of you to lose so muchmoney.
你太粗心,掉了那么多钱。
of...to do sth.用在句中作主语,可接形容词作表语。it作形式主语。而for...to do sth.除了在句子中作主语外,还可以作表语、宾语、定语和状语等,作主语时,其表语可以使形容词,也可以是名词。有些形容词,如nice,right,wrong,good和wise等都可用于这两个结构中,但是意思有所差异。
(1)It's very kind of you to help me .
你帮助我真是太好了。
语法分析:of...to do sth.结构用在句中作主语。
(2)My suggestion is for you to do yourhomework.
我建议你去做家庭作业。
语法分析:for...to do sth.结构在句子中作表语。
(3)I'd like for you to come here.
我想还是你来这里好。
语法分析:for...to do sth.结构在句子中作宾语。
(4)He has a lot of work for you to do.
他有很多活要你来做。
语法分析:for...to do sth.结构在句子中作定语。
(5)He opened the door for the students tocome in.
他开门让学生进来。
语法分析:for...to do sth.结构在句子中作状语。
(6)It is important for your teachers toattend today's meeting.
参加今天的会议对你的老师很重要。
语法分析:在for...to do sth.结构中,不定式的思维主语可以是人或物,也可以是引导词there。
(7)You are kind to lead the blind manacross the road.
你真是好心人,把盲人引过马路。
语法分析:for...to do sth.结构中,后面的名词或代词与前面的形容词有思维上的主表关系。
(1)It is impossible for you _____ [get]there in such a short time.
(2)It will be a mistake for me not _____[help]them.
(3)It is possible for us to spend threehours _____[complete]the composition.
(4)It will take three hours for us_____[complete]the composition.
(5)It is a good idea for the present_____[give] to her.
(6)It is a pity for there _____ any disagreementin the company.
(7)It is wrong of the hunter _____[kill]the monkey.
(1)to get (2)to help (3)completing (4)to complete (5)to be given (6)to be (7)tokill
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