it的用法课件（29张）
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课件29张PPT。GrammarThe use of "it''① It is never too old to learn.
活到老, 学到老。
② It is easier to fall than to rise.
摔倒容易爬起来难。
③ It is no use crying over spilt milk.
覆水难收。
④ It never rains but it pours.
不鸣则已, 一鸣惊人。
⑤ It is easy to open a shop but hard to keep it always open.
创业容易守业难。
⑥ It takes three generations to make a gentleman.
十年树木, 百年树人。Proverbs(谚语) with “It”The use of “it”一、 用作人称代词，代表前面提到的人或事物Who’s it? ______ me.
Look at the picture. _____ is a picture
of our school. It’sIt 二、用于代替指示代词this和that—Is this jacket yours?
—Yes, _____ is.it三、用以表示时间、距离、天气、季节、
环境等1) It is half past eight now.
2) It is about 80km from Huizhou to Shenzhen.
3) I hope that it will be fine tomorrow.
4) It’s winter now.
5) It’s quiet here.circumstanceweatherdistancetime season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。四、it 用作形式主语思考:
1. 为什么要用it做形式主语而把真正的主语
放到后面?
为了保持句子结构前后平衡，避免头重脚轻。思考:
2. it替代不定式的It be adj. (for / of sb.) to do
句型中，介词for和of有何区别？
It is illegal for a person to drive a car
without a license.
It's kind of you to help me with the problem.1. 代作主语的动词不定式1) It be adj. for sb. to do sth.
此处的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, clear, obvious, certain, suitable,
proper, fit, useful, useless, dangerous, true…2) It be adj. of sb. to do sth.
此处的adj.通常为描述人的形容词:
kind, unkind, nice, rude, cruel, polite, impolite
considerate, thoughtful, careful, careless,
crazy, silly, foolish, stupid, clever, wise…It’s no good / no use / useless doing…
It’s worthwhile doing / to do
It is no use crying over spilt milk. 3) it替代作主语的动名词的常见句型2. it作形式主语替代主语从句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。
It is very clear that he’s round and tall
like a tree. ① It is adj. + clause 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 satellite will be
put into orbit.② It is v-ed that…③ 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”。没有这种意义时,
则不用虚拟语气。
It is a pity that such a thing (should) happen
in your class. 五、it 用作形式宾语 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。如： 1. I think it no use arguing with him.
2. I found it very interesting to study English.
3. He made it clear that he was not interested
in this subject.
4. I’d appreciate it if you would like to teach
me how to use the computer.
5. I hate it when people talk with their mouths
full.六、用于强调句型中It + is/was + 被强调部分 + that/who + 剩余部分I met Tom in the park yesterday.1) It was I who met Tom in the park yesterday.2) It was Tom who I met in the park yesterday.3) It was in the park that I met Tom yesterday.4) It was yesterday that I met Tom in the park.注意: 此结构强调的成分仅限于主语，宾语和状语。① 强调句的一般疑问句句型：
Is / Was + it + 被强调部分 + that /
who + 剩余部分?
Was it Tom that /who I saw yesterday
here?
Was it at eight o’clock that you began
to work?② 强调句的特殊疑问句句型：
特殊疑问词 + is / was + it + that +
剩余部分?
Where was it that you picked up
the wallet?
Why was it that he couldn’t answer
the question?★判断句子是否强调句, 可把 It is / was …
that 去掉，剩余部分如果是一个完整的
句子，就是强调句。
It was in the street that I met her father.
→In the street I met her father.
It was because she was ill that they
didn’t ask her to do the job.
→Because she was ill, they didn’t ask
her to do the job.1) It was in 1945 that World War II ended.
(强调句)
2) It was 1945 when World War II ended.
(状语从句)It was five o’clock _________ I got home.
It was at five o’clock _______ I got home. whenthat若原句是not…until句型，在强调until部分时，要把否定形式放入被强调部分。如:
He didn’t leave until I returned.
= It was not until I returned that he left.It is / was not until…(被强调部分) + that ...
该句型也是强调句型。主要用于强调时间状语,
译成汉语“直到……才……”,可以说是
not ... until ... 的强调形式。
I didn’t realize she was a famous film star
until she took off her dark glasses.
= It was not until she took off her dark glasses
that I realized she was a famous film star. It was not until ____ that ____ to prepare
his lessons.
A. did his father come in, the boy began
B. did his father come in, did the boy begin
C. his father came in, did the boy begin
D. his father came in, the boy beganD 七、it 常用的固定搭配 make it
相当于succeed, 表示“成功、做到、说定、
赶上、及时到达”
It’s hard to make it to the top in this company.
2) 相当于fix the date for, 表示“约定好时间” ?
—Shall we meet next week?
—OK. We just make it next Saturday.2. take it easy
相当于Don’t worry. 用来劝告别人, 表示
“不要慌, 别担心, 沉住气”
Take it easy! He will do it well.
3. It (all) depends.
相当于It hasn’t been decided yet. 表示
“那得看情况, 还没有定下来”
—Are you going to the countryside for holiday?
—It depends.4. It's up to sb.
相当于it’s decided by sb. 表示
“由…决定, 由…负责, 取决于…”
—Shall we go out for dinner？
—It's up to you.改错
1. You won’t find difficult to get to the city
center.
2. I know there is not easy to be a teacher.
3. This is surprising that you could finish
such a difficult task in such a short time. ititItExercise∧________Translation 是时候戒烟了。
It is time to quit smoking. 2. 让人惊讶的是在我这个年纪我依然
这么健康。(it作形式主语)
It is amazing that at my age I am
still so fit.3. 一旦你吸烟上了瘾，你会发现要把它
戒掉很难。(it作形式宾语)
Once you are addicted to smoking,
you will find it tough to give it up.4. 青少年要适应新的环境有点难。
(it作形式主语)
It is a little difficult for adolescents
to adapt to a new environment.Homework:
Finish the Exx. in the Wb.
活到老, 学到老。
② It is easier to fall than to rise.
摔倒容易爬起来难。
③ It is no use crying over spilt milk.
覆水难收。
④ It never rains but it pours.
不鸣则已, 一鸣惊人。
⑤ It is easy to open a shop but hard to keep it always open.
创业容易守业难。
⑥ It takes three generations to make a gentleman.
十年树木, 百年树人。Proverbs(谚语) with “It”The use of “it”一、 用作人称代词，代表前面提到的人或事物Who’s it? ______ me.
Look at the picture. _____ is a picture
of our school. It’sIt 二、用于代替指示代词this和that—Is this jacket yours?
—Yes, _____ is.it三、用以表示时间、距离、天气、季节、
环境等1) It is half past eight now.
2) It is about 80km from Huizhou to Shenzhen.
3) I hope that it will be fine tomorrow.
4) It’s winter now.
5) It’s quiet here.circumstanceweatherdistancetime season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。四、it 用作形式主语思考:
1. 为什么要用it做形式主语而把真正的主语
放到后面?
为了保持句子结构前后平衡，避免头重脚轻。思考:
2. it替代不定式的It be adj. (for / of sb.) to do
句型中，介词for和of有何区别？
It is illegal for a person to drive a car
without a license.
It's kind of you to help me with the problem.1. 代作主语的动词不定式1) It be adj. for sb. to do sth.
此处的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, clear, obvious, certain, suitable,
proper, fit, useful, useless, dangerous, true…2) It be adj. of sb. to do sth.
此处的adj.通常为描述人的形容词:
kind, unkind, nice, rude, cruel, polite, impolite
considerate, thoughtful, careful, careless,
crazy, silly, foolish, stupid, clever, wise…It’s no good / no use / useless doing…
It’s worthwhile doing / to do
It is no use crying over spilt milk. 3) it替代作主语的动名词的常见句型2. it作形式主语替代主语从句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。
It is very clear that he’s round and tall
like a tree. ① It is adj. + clause 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 satellite will be
put into orbit.② It is v-ed that…③ 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”。没有这种意义时,
则不用虚拟语气。
It is a pity that such a thing (should) happen
in your class. 五、it 用作形式宾语 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。如： 1. I think it no use arguing with him.
2. I found it very interesting to study English.
3. He made it clear that he was not interested
in this subject.
4. I’d appreciate it if you would like to teach
me how to use the computer.
5. I hate it when people talk with their mouths
full.六、用于强调句型中It + is/was + 被强调部分 + that/who + 剩余部分I met Tom in the park yesterday.1) It was I who met Tom in the park yesterday.2) It was Tom who I met in the park yesterday.3) It was in the park that I met Tom yesterday.4) It was yesterday that I met Tom in the park.注意: 此结构强调的成分仅限于主语，宾语和状语。① 强调句的一般疑问句句型：
Is / Was + it + 被强调部分 + that /
who + 剩余部分?
Was it Tom that /who I saw yesterday
here?
Was it at eight o’clock that you began
to work?② 强调句的特殊疑问句句型：
特殊疑问词 + is / was + it + that +
剩余部分?
Where was it that you picked up
the wallet?
Why was it that he couldn’t answer
the question?★判断句子是否强调句, 可把 It is / was …
that 去掉，剩余部分如果是一个完整的
句子，就是强调句。
It was in the street that I met her father.
→In the street I met her father.
It was because she was ill that they
didn’t ask her to do the job.
→Because she was ill, they didn’t ask
her to do the job.1) It was in 1945 that World War II ended.
(强调句)
2) It was 1945 when World War II ended.
(状语从句)It was five o’clock _________ I got home.
It was at five o’clock _______ I got home. whenthat若原句是not…until句型，在强调until部分时，要把否定形式放入被强调部分。如:
He didn’t leave until I returned.
= It was not until I returned that he left.It is / was not until…(被强调部分) + that ...
该句型也是强调句型。主要用于强调时间状语,
译成汉语“直到……才……”,可以说是
not ... until ... 的强调形式。
I didn’t realize she was a famous film star
until she took off her dark glasses.
= It was not until she took off her dark glasses
that I realized she was a famous film star. It was not until ____ that ____ to prepare
his lessons.
A. did his father come in, the boy began
B. did his father come in, did the boy begin
C. his father came in, did the boy begin
D. his father came in, the boy beganD 七、it 常用的固定搭配 make it
相当于succeed, 表示“成功、做到、说定、
赶上、及时到达”
It’s hard to make it to the top in this company.
2) 相当于fix the date for, 表示“约定好时间” ?
—Shall we meet next week?
—OK. We just make it next Saturday.2. take it easy
相当于Don’t worry. 用来劝告别人, 表示
“不要慌, 别担心, 沉住气”
Take it easy! He will do it well.
3. It (all) depends.
相当于It hasn’t been decided yet. 表示
“那得看情况, 还没有定下来”
—Are you going to the countryside for holiday?
—It depends.4. It's up to sb.
相当于it’s decided by sb. 表示
“由…决定, 由…负责, 取决于…”
—Shall we go out for dinner？
—It's up to you.改错
1. You won’t find difficult to get to the city
center.
2. I know there is not easy to be a teacher.
3. This is surprising that you could finish
such a difficult task in such a short time. ititItExercise∧________Translation 是时候戒烟了。
It is time to quit smoking. 2. 让人惊讶的是在我这个年纪我依然
这么健康。(it作形式主语)
It is amazing that at my age I am
still so fit.3. 一旦你吸烟上了瘾，你会发现要把它
戒掉很难。(it作形式宾语)
Once you are addicted to smoking,
you will find it tough to give it up.4. 青少年要适应新的环境有点难。
(it作形式主语)
It is a little difficult for adolescents
to adapt to a new environment.Homework:
Finish the Exx. in the Wb.