it 的固定句型
it 作形式主语或形式宾语的一些高频固定搭配。
It takes sb. … to do / It is + 形容词 + of/for sb. to do
要点
- It takes sb. + 时间 + to do：某人花多少时间做某事。
- It is + 形容词 + for/of sb. to do：for 说事情，of 说人的品质。
- It is + 名词 + to do / that 从句：It is a pity that …
- It is said/reported/believed that …：据说、据报道。
- It seems/appears that …：似乎、看起来。
- It is the first ／ second time that 后面接现在完成时；主句一退到过去，从句跟着退成过去完成时：It was the third time that he had been late that week.
- It doesn't matter ／ It is unclear 这类句型里 it 只占住主语那一格，真正在后头的是疑问词领头的从句：It doesn't matter what you say. ／ It is unclear who wrote it.
例句
It takes about twenty minutes.
大约需要二十分钟。
It is a pity that you cannot come to the party on Sunday.
你周日来不了聚会，真可惜。
It took me two hours to finish the work.
我花了两个小时完成这项工作。
It is kind of you to help me.
你能帮我真是太好了。
It was the first time that she had spoken on stage.
那是她第一次在台上讲话。
It takes me ten minutes to walk to the station.
走到车站要十分钟。
易错提示
- for 与 of 的区别：形容词说「人好不好」用 of，说「事难不难」用 for。
- It is said that… 这类句型里的 it 不能换成别的词。
- of 那一头能整句改写成"人说"：It is rude of him to shout. ＝ He is rude to shout.；for 那一头不能这样改 —— It is easy for him to solve it 别改成 He is easy to solve it。
- It is said that… 后面那半句的时态照它说的内容走：说明天就用将来，说昨天就用过去，不是统统退回过去时。