it用法公开课课件

你让我们做 这些练习是 明智的。
It is wise of you to let us do these excises.
It's kind of you to help me work out the problem.
2) It be adj. of sb. to do sth.
此处adj. 通常为描述人的形容词:
think, believe, consider, feel, make, find … hard useless + that 从句
important necessary natural/ essential
…
no use/no good/ a waste of time/ our duty
形式宾语
把什么归功于某人
三.强调句型
They made a vow（誓言） of love in front of the huge stone in 2005 .
It + be+被强调部 + that/who(a person)其他部分
It was the couple that/who made a vow of love in front of the huge stone in 2005. It was a vow of love that the couple made in front of the huge stone in 2005.
我们用有效的方法学习很重要。
It is important that we should learn in an effective way.
It is said that he has a secret weapon in maths learning.
②It is v-ed that…
It is said (reported/believed.....) that ... 该句型中的it 仍是形式主语, 真正主语是that 引导的主语从句; 该结构常译为“据说(据报道, 据悉…)”。
四、it 常用的固定搭配
1. make it
succeed成功、搞定 It was hard but I finally made it.
2. take it easy 不要慌, 别担心。 3. It all depends/that all depends. 那要视情况而定。 4. It's up to sb. 这取决于你。
It is possible that we will realize （实现） our dreams one day.
3. 代替主语从句作形式主语 ① It is adj. + 从句 1)It is clear ( 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。
Make sentences: 1.我们保持自然界的平衡是有必要的。 It is necessary for us to keep the balance of nature.
2.在日常生活中练习你的英语口语是非常重 要的。 It’s very important for you to practise your oral English in daily life.
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.
It is necessary that you (should) remember the 3500 words.
2) It is important ( necessary， strange， natural, surprising...) that ... that 后的从句中要用虚拟语气（should + 动 词原形。
I think it important that you (should) make a plan. I have made it a rule that I will do some English reading every day. 规定，习惯于
结构动词+ it + if/that/when 动词有喜欢类：enjoy, like, appreciate, prefer 讨厌类：hate, dislike 如果你能给我这个机会我将不胜感激。 I would appreciate it if you can offer me the chance. I like it when my mother is happy. I hate it when people talk with their mouths full.
很遗憾你不能来参加这个派对。 It is a pity that you couldn’t come to the party. 我很荣幸被邀请参加你的生日聚会. It is an honor that I was invited to your birthday party.
④ It happens (seem,appears, turns out , ) 等不及物动词+that... 碰巧．．.看来．．．结果证明….
请指出下列句子的强调部分：
It was not until she took off her dark glasses that
I realized she was a famous film star.
It is not until … + that ... 直到…才 It is what we think that controls us.
kind, , nice, rude, polite, cruel, 百度文库onsiderate
（细心的）, thoughtful, careful, careless,foolish,
stupid, clever, wise.
Make sentences:
你能帮我，真好。
It’s very kind of you to help me. 给我让座，您太好了！
It’s lovely.
It weighs only 3 kilos.
Who is it?
二形式it------形式主语， 形式宾语
形式主语
你们掌握英 语是至关重 要的。
To have a good command of English is vital for all of you. It is vital for all of you to have a good command of English.
It seemed that he didn’t tell the truth. It happened that I was out when he called.
⑤ It is (high) time that ... 从句应该用虚拟语气，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．．．＂
2) It’s only half an hour’s walk from here 3) It is sunny today, isn’t it?
4) It’s spring now. Season 5) It’s quiet here. Circumstance （环境） Weather
4、可以用来指动物、婴儿和未确定身份的人。
What jobs can “it” do?
It 用法归纳
一、 指代it
二、 形式it 三、 强调it 四、 含有it的短语、谚语
一、 1.用作人称代词, 代表前面提到的人 或事物. Look at the picture. It is a picture _____ of our school.
It was in front of the huge stone that they made a vow of love in 2005. It was in 2005 that…
when I got home. It was five o’clock _________ It was at five o’clock _______ that I got home. A that B when
It takes great efforts/pains to succeed.
2. 代替动名词做主语
It’s no good/ use/pleasure doing…做……没 益处，没用，没趣
It is no use crying over spilt milk.
只阅读不理解没什么益处。
It is no good reading without understanding .
It is time that we should work hard. 是我们采取行动解决环境问题的时候了！ It is high time that we should take action to deal with the environmental problems.
形式宾语
动词+ it + 形容词/名词+（ for sb ）to do/doing
我发现学英语很有趣。
I found it very interesting to study English. I think it every one’s duty to protect our mother– the earth.
我认为保护我们的地球母亲是每个人的责任。
我认为你制定一个计划很重要。
人们相信健康比财富更重要。
It is believed that health is more important than wealth.
It is a shame that our city has been under the shadow of smog these days.
③ It is + noun + 从句 It is a pity (a shame /an honor /a fact /a surprise/... ) that ... 很遗憾/可耻的是/很荣幸…
It’s very nice of you to offer me a seat.
3It + takes、took ( sb. )+ 时间/金钱/精力等 + 动词不定式
It took me much time to edit（编辑） this powerpoint. 说实话需要很大的勇气。 It takes great courage to tell the truth. 成功需要付出极大的努力。
1. 代替动词不定式做主语 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, necessary, important, possible, useful, useless,vital（至关重要的）, essential （必要的）...
My pen is missing. it anywhere. I can’t find___
2.用于代替指示代词this 和that。
---Is this jacket yours? it ---Yes, ______ is.
3.用以表示时间、距离、天气、季节、环境等.
1) . It’s 10:08. to our school. Distance Time
It is never too late to learn. It's no use crying over spilt milk.
it作形式宾语的特殊句型
He took it for granted that he would pass the exam. Don’t depend/rely on it that he will arrive on time.
想当然地认为 指望
I owed it to Tom that I found the job I wanted.