it的用法课件.ppt

7. It is a pity ( a shame ... ) that ... 该句型中，that 后的从句一般用虚拟语气（should + 动词 原形），should 可省去．表示出乎意料，常译为“竟然”。 没有这种意义时，则不用虚拟语气。 It is a pity that such a thing ( should ) happen in your class. 这种事竟然发生在你们班上，真是遗憾！ It is a pity that he is ill. 他生病了，真遗憾！ 8. It is time ( about time , high time ) that ... 该句型中that 后的从句应该用虚拟语气，值得注意的是① 常用过去时态表示虚拟．② 有时也用should + 动词原形， should 不能省。常译为“是（正是）……的时侯……”。 It is time that children should go to bed. = It is time that children went to bed.
Eg2: It doesn’t matter.
it 有时并不指具体东西，而指天气、时间、环境、距离等， 称为非人称代词it. Eg1: It’s raining. Eg3: It’s quiet here. Eg2: It’s Tuesday today. Eg4: It’s two miles to the beach.
place.
用it起始的句型归纳：
1. It is + 被强调部分 + that ... 该句型是强调句型。将被强调的部分放在前面，其它部分置 于that 之后。被强调部分可以是主语，宾语，表语或状语。 强调的主语如果是人，that 可以由 who 换用。如果把这种句 型结构划掉后，应该是一个ห้องสมุดไป่ตู้整无缺的句子。这也是判断强调 句型与其它从句的方法。 It was about 600 years ago that the first clock with a face and an hour hand was made. It was they that (who ) cleaned the classroom yesterday. It was in the street that I met her father.

It seemed that he didn’t tell the truth.
It happened that I was out when he called.
第25页，共43页。
⑤ It is (high) time that ... 从句应该用虚拟语气，① 常用 过去 (chánɡ yònɡ) 时态表示虚拟．② 有时也用should + 动词 原形，should 不能省，常译为＂是（正是）
our duty
…
第27页，共43页。
形式宾语
我发现学英语很有趣。
I found it very interesting to study English.
我认为保护我们的地球母亲是每个人的责任。
I think it every one’s duty to protect our
mother– the earth.
显然，手机给我们带来了许多好处。
It is clear that cell phones have
brought us a lot of benefits.
第18页，共43页。
It is necessary that you (should) remember the 3500 words.
第19页，共43页。
第13页，共43页。
Make sentences:
你能帮我，真好。 It’s very kind of you to help me.
给我让座(ràng zuò)，您太好了！
It’s very nice of you to offer me a seat.
第14页，共43页。
3It + takes、took ( sb. )+ 时间/金钱(jīnqián)/精力等

该句型主句中的 it 指时间， 主句中的时态常是将来一般 时或过去时两种时态．主句中的表语多是long， not long ， 3 days ， 2 weeks 等表示时间段的词或短语， 常译为“．．．之后．．．”。
It was 3 days before he went to Beijing.
It will be not long before he finishes his job.
• You have to believe in yourself. That's the secret of success. 人必须相信自己，这是成功的秘诀。
•
形式宾语
I think it his duty to clean the blackboard.
Sentence patterns:
an honour
基本用法:
It can be used as impersonal pronouns to talk about time, date, distance or weather and so on.
it可用来指代前文提到的人,物或事情,也可 以用来指时间,金钱,距离,天气等自然现象
__I_t _ was a sunny day. Peter decided to go for a walk to the park, though __i_t__ was two miles away. __It_ was so comfortable to
Sentence patterns:
…
find
possible
1. S+ think + it + necessary +( for sb. ) to do sth.

The weather of this week is worse than that of last week. (that代替不可数名词
weather) The quality of iron produced in your factory is better than that in their
• Cook was a strict but good captain, one who took good care of his sailors.
• The water in the well is cleaner than that in the river.
.
• VI. it可以替代句中的不定式或从句等, 充当形式主语或形 式宾语。one与that均无此用法。
• The umbrella you bought is cheaper than that I bought. （替代词that在该句中特指“the umbrella I bought”, 以区别“the umbrella you bought”）
.
• II. one与that虽可用来指代同名异物, 但 one为泛指, 相当于a／an＋名词; that为特 指, 相当于the ＋名词。所以one所指代的 名词的修饰语一般为 a／an ／some ／any; that所指代的名词的修饰语往往是the ／ this ／that。
.
区别
• I. it／one ／that三者均可用作代词, 指代前面提 到的名词。一般说来, it指代同名同物; one与that 则指代同名异物。
• I have lost my umbrella; I'm looking for it. （该句中it就是指前面的my umbrella）