it用法课件

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3.It is believed that all the students have done their best. are believed to have done = All the students ____________________________ their best.
注意 5:
注意 6:
It代替的从句与其他从句的区别
It is known to all that he is diligent. 1) ____ As known to us all, he is diligent. 2) ____is Whatis known to us all is that he is diligent. 3) _____ It 4) ____is important that we should learn every subject well. What 5) _____ is important is that we should learn English well.
十年树木, 百年树人。
Self-study
Read the book on P87-88 and answer the question: What functions does “it” have?
Functions of “it”:
代时间/地点/天气 代上文 代this/that 3)_______________ 1. 代词: 1)________2)____________ /温度/距离/环境 强调句型 形式宾语 形式主语 2. 引导词: 1)__________2)___________3)____________ 固定句型
一:用作代词 What does “it” refer to?
1.It gets dark very early in the winter. 指时间 2.What will you call it if it’s a boy? 指婴儿 3.I love spring---It’s a wonderful time of the year. 指季节 4.It’s less than 100 kilometres from here to Jinan. 指距离 5.When the factory closes, it will mean 500 people losing 指上文提到的事 their jobs. 6.The little animal is a monkey and it lives in Sichuan. 7.It has snowed much this year.指上文提到的动物
二: 用作形式主语
基本结构: It + be/v. +……+ (for sb/ of sb.) to do sth doing sth. that/ whether …
注意 1:
For or Of ?
for 1. It is important ____ us to learn English well. of 2. It is very kind ____ you to help me learn English. 3. It is foolish ____of you to believe him. 4. It is necessary ____for you to go over this lesson.
三:用作形式宾语
1.基本结构:
动词+ it + 形容词/名词 think believe find feel consider suppose make keep… +( for/of sb +)to do + doing sth. necessary + that 从句 possible natural,
It + vi.(不及物动词) + that clause
Translate: It happens that he was out…
It appears that he is honest. 碰巧 好像 好像
It seems that he doesn’t know the secret.
我突然想到 It occurred to me that I lost my purse on the bus. It doesn’t matter whether he will come or not. 没有关系
no use/no good/ a waste of time/ ……
三:用作形式宾语
Translate:
1ຫໍສະໝຸດ Baidu 我认为和他争吵没有用。 no use arguing I think it ________________with him. 2. 我发现学英语非常有趣。
I found it _______________to very interesting study English.
指天气
• 特别注意: it, one和that, those作替代词的区别
(1)The book in your bag is very interesting. Can I borrow ? that on (2) The book in your bag is more interesting than ______ the desk. the one that in Nanjing. (3) The weather here is much colder than____ one free of charge. (4) The books are free. You can take____
2. it作形式宾语的特殊句型
V.+ it + if/that/when
动词有喜欢类:enjoy, like, appreciate, prefer 讨厌类:hate, dislike I would appreciate it if you paid in cash. I like it in the autumn when the weather is clear and bright. I hate it when people talk with their mouths full.
注意 4:
He is said/ reported to have gone abroad. =It is said/reported that he has gone abroad.
1.It is said that he is the richest man in the world. is said to be the richest man in the world. = He _______________ 2.It is reported that he is writing an interesting novel. is reported to be writing = He ______________________ an interesting novel.
Proverbs(谚语) with “It”
It is never too old to learn.
活到老学到老;学无止境。
It is no use crying over spilt (溢出的) milk.
覆水难收。
It takes three generations (辈,代) to make a gentleman.
平阴县第一中学 高二英语
The use of “it”
Learning aims: 1.Revise the basic usages of “it”. 2.Conclude the rules of “it”. 3.Improve the abilities of cooperation and expression.
Why was it that he couldn’t help me?
why it was that he couldn’t help me. I asked him ________________
注意:在从句中用陈述语序
注意:
2. not…until句式的强调句型
it
those on the destk. (5) The books in the bag are better than _____ the ones
二:用作形式主语
用it改写下列句子: 1.To remember this rule is important. It is important to remember this rule. 2. Chatting on the internet is a waste of time. It is a waste of time chatting on the internet. 3. Whether you come or not doesn’t interest me. It doesn’t interest me whether you come or not. 4. We should make our country much stronger, which is our duty. It’s our duty to make our country much stronger.
四、强调句型
1.基本结构 It is/was + 被强调部分 + that /who(人) ...
例如: 他是因为病了才没能帮我 It was because he was ill that he couldn’t help me. Was it because he was ill that he couldn’t help me?
3. 我认为你去参加这会议很重要。
(should) attend I think it important that you _____________the conference. I think it important for you _________the to attend conference.
注意 2:
It 何时代替doing?
It +be +
no use no good a waste of time ……
+ doing sth
翻译: It is no use crying over spilt milk。 1. 覆水难收。____________________________________ 2. 和他争论没有用。_______________________________ It is no good arguing with him。 3. 打电脑游戏是浪费时间。 It is a waste of time playing computer games。 _____________________________________________
(3). It is insisted (ordered/commanded,suggested/advised/ proposed, demanded/requested/required... ) that ... that 后的从句要用虚拟语气(should + 动 词原形),should 可以省
注意 3:
(1). It is a pity (a shame /an honor /a good thing/a fact /a surprise/... ) that ...
(2). It is important ( necessary,strange,natural...) that ...
1. I hate __ it that you can dance so well but I can't. it when all the family sit at table. 2. I like/ enjoy__ it if I could be accepted. 3. I would appreciate ___
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