1. It's+adj.+for sb.+to do sth. 对某人来说做某事怎么样
如:
It is dangerous for children to play in the street. 孩子们在街上玩是很危险的。
2. It's time for sth. 是干某事的时间了;It's time(for sb.)to do sth.该干某事了。
如:
①It's time for the meeting. 该开会了。
②It's time for us to go to school. 我们该上学了。
3. It takes sb. some time to do sth. 做某事花某人一些时间。
sb. spend some time/money on sth./(in)doing sth.
某人花时间(金钱)在某事上/花时间(金钱)干某事。
sth. cost sb. some money 某事花某人一些钱。
pay some money for sth.为某事(物)付钱。
如:
① It took me two hours to write the letter. 写这封信花了我两小时的时间。
② He spends half an hour(in)reading English every morning.他每天早上花半小时读英语。
③ He spends one hour on the housework every day. 他每天花一小时做家务。
④ The bike cost me 500 yuan. 这辆自行车花了我500元。
⑤ I spent 500 yuan on the bike. 我买这辆自行车花了500元。
⑥ I paid 500 yuan for the bike. 我花了500元买这辆自行车。
重要提示:
cost主语一般为物;spend, pay主语一般为人。例 ① 中it用作形式主语,动词不定式为真正主语。
4. too+形容词/副词+to do... 太……以致不能……
如:
① I was too excited to say a word.
我激动得一个字也说不出来。
② Tom is too short to reach the apple.
Tom太矮了,拿不到那个苹果。
重要提示:
这是一个否定句型,不能在不定式前加not,可以用so... that...结构改写。
例句 ① 可以改写成:I was so excited that I couldn’t say a word.
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