It用法及其句型和固定搭配讲解(2)
三、It作主语的句型
1. It takes sb. to do(=sb takesto do)某人用多长时间做某事
例 It took the men a week to mend our roof.(= The men took a week to mend our roof.)
2. It's(just)(un)like sb. to do(不)像某人做某事的风格
例 It was(just)like him to think of helping us.
3. It's(about/high)time that should /v-ed是该做某事的时候了
例 It's(about/high)time that we should take action.
4. It's the x-th time(that) have v-ed第几次做某事了
例 It's the third time that he has failed the driving test.
5. It is/has been since continuous v-ed(延续性动词)某动作已有多长时间不发生了
例 It's 10 years that he lived here
6. It was(not) before过(不)了多长时间某动作发生了
例 It was not long before they arrived.
四、It 作形式宾语
用来替代作宾语的从句、动词不定式、动名词,而把真正作宾语的从句、动词不定式、动名词置于句尾。
It 作形式宾语的常见句型:
1. verb+ it+ adj./noun(for/of)to do/clause (verb=think,believe,suppose,consider,feel,make,keep)
例 I think it hard for you to do the task on your own./I think it hard that you'll do the task on your own.
2. verb+it+adj./noun(one's)doing(adj.=useless/worth/worthwhile)(noun=no use/no good/worth one's while/a waste of time/money/energy/words)(verb=think,believe,suppose,consider,feel,make,keep)
例 I'll make it worth your while telling me about his secret.
3. verb+it+ important/unimportant/necessary/unnecessary/natural/essential that (should)
verb+it+of much/great/no/little importance that(should)
(verb=think,believe,suppose,consider,feel,make,keep)
例 I think it important that you(should)attendthe conference.
4. verb + it+ as+ noun/adj.+ clause(verb=accept,regard,take,see,view)
例 The lecturer takes it as encouraging when so many students attend his lecture.
5. v. +it + prep. + that
owe it to sb. that把归功于
leave it to sb that把留给某人去做
take it for granted that 想当然
keep it in mind that
例 Don't bother to arrange anything. Just leave it to me to sort out.
6. It用在不能直接跟宾语从句的动词后面,尤其是表示好恶的动词后,enjoy,like,love,dislike,resent,hate,don't mind,be fond of,feel like,see to 宾语从句紧跟it之后
例 I hate it you can swim so well and I can't.
7. It用在不能直接跟宾语从句的介词后面,宾语从句紧跟it之后(except that例外)
例 I'm for it that you will follow their advice.
五、强调句型
It is/was+被强调部分+ that(who) 强调句型用来强调谓语动词以外的任何句子成分。当被强调部分是人时也可以用who.
在使用强调句型时需注意以下几点:
1. 请注意强调句型的特殊疑问句
例 When was it that he changed his mind to take part in the activity?
2. 在强调原因状语从句时,只能强调由because所引导的从句
例 It was because he was ill that he didn't come to school yesterday.
3. 在强调not until结构时必须把not与until一起放到被强调的位置上
例 It was not until she took off her dark glasses that I realized she was my brother.
4. 注意强调句型与定语从句的区别
例 It was at 7 o'clock that he came here yesterday.( 强调句型)
It was 7 o'clock when he came here yesterday.(定语从句)[1][2][3]
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