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1、Grammar The use of “it” The third periodStep 1 Make up sentences, using It is no use/good doing sth 做没有用/不好It is fun doing sth 做很有趣1)_2)_3)_4)_Step2 Translate the following proverbs(谚语) with “It”It is never too old to learn. _ It is easier to fall than to rise _ 覆水难收。_ 不鸣则已, 一鸣惊人。 It is easy to open
2、 a shop but hard to keep it always open. _ It takes three generations (代) to make a gentleman._Step3 Read and analyze the sentences.1)It is Friday today.2)It was very cold last Monday. 3)It is about 8：30 now.4)It is about 25km from Longxian to Bazi.5)It lies in the south of Shaoguan city.6)It is 40C
3、 ! You got a high fever!Conclusion： it 能够用作非人称代词, 表示_,_, _, _, _, _等Read and analyze the sentences.7)It is obvious that the water was to blame.8)It is true that he will treat me for breakfast tomorrow.9)It is certain that our class will do a good job in the final exam.10)Is it possible that he will
4、become the chairman of our country?11)It is amazing that at my age I still look like a student!牢记以下常用于该句型的形容词Itis clear/obvious/true/possible/certain/amazing/ridiculous等+ that从句.思考： 为什么要用it做形式主语而把真正主语放到后面去?Step4 The use of “it”一、 用作人称代词, 代表前面提到的人或事物1) Whos it? _ me.2) Look at the picture. _ is a pic
5、ture of our school.二、用于代替指示代词this 和that。-Is this jacket yours? -Yes, _ is.三、 用以表示时间、距离、天气、气候、 季节、环境等1)It is half past eight now.2)Its only half an hours walk from here to our school.3) I hope that it will be fine tomorrow.4) It has rained much this year.5) Its spring now.6) Its quiet here.四、it 用作形式主
6、语 替代作主语的从句、动词不定式、动名词, 而把真正作主语的从句、动词不定式、动名词置于句尾。1. 代作主语的动词不定式 1) It be adj. (for sb.) to do sth.此处adj. 通常为描述事件的形容词： easy, difficult, hard, necessary, unnecessary, possible, impossible, likely, unlikely, right, wrong, important, unimportant, legal, illegal, well-mannered, ill-mannered, polite, impolit
7、e, clear, obvious, certain, suitable, proper, fit, useful，useless, dangerouse.g It is illegal (for a teenager) to drive a car without a license.2) It be adj. of sb. to do sth.此处adj. 通常为描述人的形容词： kind, unkind, nice, rude, cruel, considerate, thoughtful, thoughtless, careful, careless, silly, foolish,
8、stupid, clever, wise, crazy.e.g Its kind of you to help me with the problem.3) It替代作主语的动名词的常见句型Its no good/use doingIts (well) worth doingIts (well) worth ones while doing/to doIts (well) worth while doing/ to doe.g Its no use crying over spilt milk.2. it作形式主语替代主语从句It is adj. + clause It is clear (
9、obvious, true, possible, certain ) that . 该句型中it 是形式主语, 真正的主语是that 引导的主语从句, 常译为“清楚(显然, 真的)”, 是主语从句最常见的一种结构。e.g. It is very clear that hes round and tall like a tree. It is v-ed that=sb./sth. is to do It is said (reported/ learned/believed/thought/known/told/hoped.) that . 该句型中的it 仍是形式主语, 真正主语是that 引
10、导的主语从句; 该结构常译为“据说(据报道, 据悉)”。It is said that he has come to Beijing.It is reported that another earth satellite has been put into orbit. It is + noun + 从句 It is a pity (a shame /an honor /a good thing/ a fact /a surprise/. ) 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
11、义时, 则不用虚拟语气。如：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！五、it作形式宾语当复合宾语中的宾语是不定式、动名词宾语从句时, 往往把宾语放在它的补足语后面，而用it 作形式宾语, 放在宾语补足语之前。 该句型中的it 作形式宾语, 常用的动词有think, believe, make, find, consider, feel等。 I think it no use arguing wit
12、h him. 我认为和他争吵没有用。I found it very interesting to study English. 我发现学英语非常有趣。He made it clear that he was not interested in this subject.他非常清楚地表示他对那门学科不感兴趣。 六、用于强调句型中It + be+被强调部分 + that/who(a person)从句I met Tom in the park yesterday.1) It was I who met Tom in the park yesterday.2)强调宾语：3）强调地点状语：4）强调时间
13、状语：It was five oclock _ I got home.It was at five oclock _ I got home.It is not until + 被强调部分 + that . 该句型也是强调句型。主要用于强凋时间状语, 译成汉语 “直到才”, 能够说是not . until . 的强调形式。如： It was not until she took off her dark glasses that I realized she was a famous film star. = Not until she took off her dark glasses did
14、 I realize she was a famous film star. = I didnt realize she was a famous film star until she took off her dark glasses.1) It was not _ she took off her dark glasses _ I realized she was a famous film star. (92)A. when, that B. until, when C. until, that D. when, then2) It was not until _ that _ to prepare his lessons. (91)A. did his father come in, the boy beganB. did his fat
