代词 it的用法归纳
it看起来是个简单的“小词”，但是它有许多用法，而且是贯彻初高中的重要考点，总结如下:
it的指代用法
1指代上下文提到的某样东西 Where is my dictionary？I left it on the desk.
2 用以代替指示代词this that
-What is this? -It is a flag
3 指代不知性别的婴儿或者身份不明的人
The baby cried because it was hungry.
-Who is knocking at the door？
-It must be the milkman.
4 指代时间，距离，天气或温度
It is nine o'clock sharp now.
It is raining hard outside.
It is a long way to the factrory.
5常用来代替不定式，动名词，或者名词性从句作形式主语或形式宾语，而将真正的主语或宾语后置
It's not easy to learn a foreign language.
I have made it clear that nobndy is allowed to smoke here.
it作形式主语、形式宾语常用句型
1It is a pity /shame that…真可惜……
2It is no wonder that…不足为奇……
3It seems/appears that…似乎……
4It looks/seems/ as if/as though…看起来……
5It happens that…碰巧……
6It occurs to/comes to/strikes/hits sb. that…某人突然想起……
7It is said /reported that…据说/据报道……
8It is certain that…肯定……
9It is well-known that…众所周知……
10It is no use/no good doing sth.做某事没用
11It takes sb. some time to do sth.做某事花某人好长时间
与it相关的常用短语和句型
1I take it that you don't agree with me.我想你不同意我的意见。
2I hate it when I have to speak in French on the phone.当我非得用法语打电话时，我感到厌烦。
3I like it when she sings a song to me.我喜欢她为我唱歌。
4I can't help it if he is lways late.如果他总是迟到，我也没办法。
5I would appreciate it if you could hep me.如果你能帮助我，我将不胜感激。
6Please see to it that (make sure that)you bring enough money when you go out.出门时，请确保带足了钱。
7You can depend on it that he is very smart.你就相信吧，他非常聪明。
8As someone puts it,practice makes perfect.正如某人所说，熟能生巧。
9When it comes to drive,she's got more than any of us.说到干劲，她比我们都足。
10It is(high)time that we had/should have lunch.该吃午饭了。
11It is the first/second…time I have visited the place.这是我第一/第二次参观这个地方。
12It is/has been 3 years since he joined the army.他参军三年了。
13It is three years before he came back home.三年了他才回家。
14It is I who is right.（强调句型）
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