高中英语语法解析2 (6-3)

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.

4、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)

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