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1、9B unit1 Asia it 用法完全归纳一、it 作人称代词的用法1. 指事物作为人称代词， it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。2. 指人it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如：Is it a boy or a girl? 是男孩还是女孩 ? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。【说明】 在答语中，常用来指本人，如说It s me。3. 代替某些代词代词 it 还可用于代替
2、指示代词this, that 以及复合不定代词something, anything, nothing 等。如：“Whats this?” “It s a new machine. ” “这是什么 ?”“是一种新机器 ” 。Nothing is wrong, is it? 没出什么问题，是吗 ? 二、it 作非人称代词的用法1. 基本用法it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如：It s too late to go there now. 现在去那儿已经太迟了。It can get very hot here. 这里有时会很热。2. 用于某些句型It
3、 s time for sth. 该做某事了。It s time to do sth. 该做某事的时候了。It s time for sb to do sth. 某人该干某事了。It s (about / high) time + that-从句. 某人该做某事了。 (从句谓语用过去式，有时也用 “should+ 动词原形 ”)It s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时 ) It s + 时间段 + since-从句. 自从有一段时间了。It s + 时间段 + before-从句. 过多长的时间才 三、it 用作形式主语1
4、. 基本用法当不定式、动名词、从句等复杂成分用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it。如：It s very important to remember this. 记住这一点很重要。2. 用作形式主语的的重要句型(1) It + be + adj. for (of) sb to do sth 某人做某事 It is hard for him to make up his mind. 他很难下定决心。It was foolish of her to say such a thing. 她说那样的话，真是太蠢了。名师资料总结 - - -精品资料欢迎下载
5、- - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 1 页，共 5 页 - - - - - - - - - 【说明】 介词 of 与 for 的区别是： of 用于指某人的性格、属性、特征等，介词 for 表示对象，意为 “ 对来说” (2) It takes sb + 时间段 + to do sth. 某人做某事花了 时间It takes years to master a new language. 要花多年的时间才能掌握一门新的语言。【说明】 此句型可以有以下多变种变体：It took me an hour to writ
6、e the letter. =The letter took me an hour (to write). =I took an hour to write the letter. 我写这封信花了一个小时。(3) It is up to sb to do sth. 该由某人做某事It s up to you to to make the choice. 得由你来作选择。(4) it look (seem, appear, happen, occur) that as if, 似乎It seemed as though he didnt recognize me. 他似乎没认出我来。(5) If
7、 it were not for, / If it hadnt been for,若不是因为 If it were not for their help, we couldnt have got over the difficulties. 四、it 用作形式宾语1. 基本用法当不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时，通常会在宾语补足语前使用形式宾语，而将真正的宾语移至句末。其基本结构为 “ 动词+it+宾语补足语 +不定式 (动名词或从句 )” 。如：I find it difficult to do the job well. 我发现做好这件事不容易。2. 用作形式宾
8、语的几个特殊结构(1) 动词+ it + that-从句。如：I like it that you came. 你来了，我很高兴。【说明】能用于此结构的动词不多， 常见的有have, take, put, like 等。(2) 动词 + it + when (if)- 从句。如：I dislike it when you whistle. 我不爱听你吹口哨【说明】 能用于此结构的动词不多，常见的有enjoy, hate, love, like, dislike, appreciate, prefer 等。(3) 动词 + prep + it + that-从句。如：See to it that
9、 youre not late again. 注意千万不要再迟到。【说明】 能用于此结构的动词不多， 常见的有 see to, look to, insist on, stick to, depend on, answer for 等。(4) 动词 + it + 介词短语 + that-从句。如：I owe it to you that I am still alive. 多亏有你我才仍然活着。【说明】 能用于此结构的动词不多，常见的有take it for granted, bring it to sbs attention, owe it to sb 等。名师资料总结 - - -精品资料欢
10、迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 2 页，共 5 页 - - - - - - - - - 1.continue to the end 坚持到最后2.take a rest 休息一下3.on one s way back 在某人回去的路上4. the capital of 的首都5.be attracted by 被吸引6.be filled with 充满7.spend the summer 避暑8.consist of /be made up of 由组成9.a man-made lake 一个人工湖
11、10.all over the area 遍及这个地区11.step by step 一步一步地12.in different shapes 形态各异13.in strange shapes 奇形怪状14.wish sb. a nice trip 祝某人旅途愉快15.be open to 对开放16.in a hurry 匆忙地17.see . with ones own eyes 亲眼所见18.dragon dance 舞龙19.get lost 迷路20.take up 占据21.be well worth doing 很值得做某事名师资料总结 - - -精品资料欢迎下载 - - - -
12、- - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 3 页，共 5 页 - - - - - - - - - 语法：一选择题1. Is _ necessary to take off our shoes when we enter the lab? A. everyone B .this C. her D. it 2. I dont think _ possible to master a foreign languagewithout much memory work.A. this B. that C. its D. it 3. Alice
13、received an invitation from her boss, _ came as a surprise. A. it B. that C. which D. he 4. Does _ matter if he cant finish the job on time? A. this B. that C. he D. it 5. Tom s mother kept telling him that he should work harder, but _ didnt help.A. he B. which C. she D. it 6. The weather turned out
14、 to be very good, _ was more than we could expect. A. what B. which C. that D. it 7. _is a fact that English is being accepted as an international language. A. There B. This C. That D. It 8. I hope there are enough glasses for each guest to have _. A. it B. those C. them D. one 9. I hate _ when peop
15、le talk with their mouths full. A. it B. that C. these D. them 10._ electricity plays such an important part in our life? A. Why is it that B. Why is it C. Why it is that D. Why is that 二填空题1. _ is well know to us all that the earth is round. 2. _doesnt matter much whether hell come to the party. 3.
16、 I feel _ an honour to be invited to speak here. 4. Is _ possible to fly to the moon in a spaceship? 5. She heard of a terrible noise, _ brought her heart into her mouth.名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 4 页，共 5 页 - - - - - - - - - 答案：1-5 DDCDD 6-10 BDDAA 1-5.it名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 5 页，共 5 页 - - - - - - - - -