高中英语it的用法课件-(详细有高考题-精品)
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大家好
1
It的用法
Mr Liu
2
一、基本用法:
it可用来指代前文提到的人,物或事情, 也可以用来指时间,金钱,距离,天气等 自然现象
3
1. it作人称代词
⑴. it的最基本用法是作人称代词，主要指刚提到的事物， 以避免重复:
Ningbo is a beautiful city, isn’t it?
6. It is time ( about time ，high time ) that ...
该句型中that 后的从句应该用虚拟语气，值得注意的是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．．．＂
It is time that children should go to bed. = It is time that children went to bed.
4
2.非人称代词it
it有时并不指具体的东西，而泛指天气、时间、环境等， 称为非人称的it： ⑴.指天气：
It is a lovely day, isn’t it? It is a bit windy.
⑵.指时间:
It was nearly midnight when she came back.
10
形式宾语特殊用法1
I like ___ in the autumn when the weather is clear and bright.(04全国)
A. this B. that CC. it
D. one
点拨:这是it作形式宾语的一种特殊用法.少数动词(如
like, love, enjoy, dislike, hate, appreciate等)或
2. The Foreign Minister said, “_I_t_is our hope that the two sides will work towards peace.”
3. _I_t _is known to everybody that the moon travels round the earth once every month.
It is kind of you to say so. = You are kind to say so.
19
3. It is necessary ( for sb. ) to do sth.
该句型与上一个同属一个句型，如果不定式的逻辑主语是由 for引起，主句中的形容词通常是表示重要性，紧迫性，频繁 程度，难易，安全等情况的形容词。 常见的形容词有：① important， necessary， natural ② easy ， safe ， common ， normal ， hard ， difficult ， dangerous ， unusual， rare ， impossible ， pleasant 等。 在①中的形容词作表语可以用从句改写， 如：
⑵.也可以指动物或婴儿(不知性别/未知性别的婴儿或孩子):
Is this your dog？No, it isn’t.
⑶.用来泛泛的指某件事:
It was a great surprise to me when he did a thing like that．
⑷.也可指抽象事物:
It is a shame, isn’t it? You are going to be married this time？When is it？
21
5. It is a pity ( a shame ... ) 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. 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！
该句型和上一个同属一个句型；由于主句中的形容 词不同，that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句 型中的形容词。
It is important that we (should) learn English well. It is necessary that he (should) remember these words.
Just leave it to me to do .
他想当然的以为女朋友会再回来。
He took it for granted that his girlfriend would
come back again.
14
三、形式主语:
15
形式主语
高考真题
1. _I_t _is necessary to be prepared for a job interview. Having the answers ready will be of great help.
16
形式主语
… possible It is / was + adj. necessary + ( for sb. ) to do sth. / clause important
…
… one’s duty It is /was + n. one’s hope + clause /( for sb. ) to do sth. an honour …
It is important for her to come to the party. = It is important that she (should ) come to the party.
20
4. It is important ( necessary， strange， natural...) that ...
22
7. It is suggested ( ordered /demanded/insisted/commanded... ) that ...
该句型和上一个同属一个句型，主句中的过去分词是表示请求， 建议，命令等词时，that 后的从句要用虚拟语气（should + 动词原形），should 可以省；常译为＂据建议；有命令．．．） It is suggested that the meeting ( should ) be put off. It was ordered that we ( should ) arrive there in two hours. 8 It is said (reported， learned....) 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 earth satellite has been put into orbit.
⑶.指环境:
It was very quiet in the café.
⑷.指距离：
It is half an hour’s walk to the city centre.
5
二、形式宾语:
6
形式宾语1
The chairman thought ___ necessary to invite Professor Smith to speak at the meeting.(05全国)
A. that B. it C. this D. him
Sentence patterns:
…
…
find
possible
1. S+ think + it + necessary +( for sb. ) to do sth./clause
feel
important
…
…
7
形式宾语2
I think it his duty to clean the blackboard.
13
形式宾语特殊用法3
动词 +it + to sb. + that… owe it to sb. that…把…归功于… leave it to sb that…把…留给某人去做 take it for granted that 把…想当然 keep it in mind that… 把…记在心里 例 1.Don't bother to tidy your room.
1.S +
…
…
find
possible
think + it + necessary +( for sb. ) to do sth. /clause
feel
important
…
…
2. S+ V + it +
… a rule one’s duty + ( for sb. ) to do sth. /clause an honour …
It is very clear that he’s round and tall like a tree. = That he’s round and tall like a tree is very clear.
18
2. It is kind ( of sb. ) to do sth.
该句型中的不定式短语是真正主语，如果不定式的逻 辑主语是由 of引起，主句中的形容词必须是能表示逻 辑主语特征的形容词。 常见的有： bad ， brave ， careless， clever ， cruel ， foolish ， silly ， stupid good （好心的）， honest ， horrible ， kind ， lazy ， modest ， naughty ， nice（有教养的）， polite， rude ， wise ， wrong（错误的）等。 这个句型可以改写为： sb. is kind to do sth. 。
…
said
It is / was p.p. known + that-clause
believed
…
17
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，肯定．．．）” 是主语从句最常见的一种结构。
11
动词 +it + that + clause
enjoy, like, / love, dislike, appreciate hate, don't mind, be fond of, feel like, see to / depend on / insist on
例 : I hate it you can dance so well but I can't.
①不定式短语②动名词短语③引导的宾语从句。 We think it our duty to clean our classroom. He felt it important learning English well. They found it difficult that they would finish their work in two days.
no good
3. S + V + it +
+ doing sth.
no use
9
形式宾语归纳
该句型中的it 作形式宾语，记忆方便---“6123结构”。
6 主句中常用的动词： think,believe,make,find,consider,feel； 1 形式宾语it； 2 宾补的两种形式：形容词或名词； 3 真正宾语的三种形式：
包含介词的动词短语(如see to, depend on等)后接宾
语从句,必须先由it担任形式宾语,再接从句.
Sentence patterns:
1. I like (enjoy, hate…) it when….
2. I would appreciate it if…
3. …see to (depend on…) it that…
Sentence patterns:
2. S+ V + it +
… a rule
one’s duty + ( for sb. ) to do sth. /clause an honour
…
3. S + V + it +
no good no use
Baidu Nhomakorabea
+ doing sth.
8
形式宾语句型
Sentence patterns:
12
形式宾语特殊用法2
动词+ it+ as+ noun/adj. + 从句 (把….视为….) accept, regard, take, see, view
例: The speaker takes it as encouraging when many students attend his lecture.
1
It的用法
Mr Liu
2
一、基本用法:
it可用来指代前文提到的人,物或事情, 也可以用来指时间,金钱,距离,天气等 自然现象
3
1. it作人称代词
⑴. it的最基本用法是作人称代词，主要指刚提到的事物， 以避免重复:
Ningbo is a beautiful city, isn’t it?
6. It is time ( about time ，high time ) that ...
该句型中that 后的从句应该用虚拟语气，值得注意的是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．．．＂
It is time that children should go to bed. = It is time that children went to bed.
4
2.非人称代词it
it有时并不指具体的东西，而泛指天气、时间、环境等， 称为非人称的it： ⑴.指天气：
It is a lovely day, isn’t it? It is a bit windy.
⑵.指时间:
It was nearly midnight when she came back.
10
形式宾语特殊用法1
I like ___ in the autumn when the weather is clear and bright.(04全国)
A. this B. that CC. it
D. one
点拨:这是it作形式宾语的一种特殊用法.少数动词(如
like, love, enjoy, dislike, hate, appreciate等)或
2. The Foreign Minister said, “_I_t_is our hope that the two sides will work towards peace.”
3. _I_t _is known to everybody that the moon travels round the earth once every month.
It is kind of you to say so. = You are kind to say so.
19
3. It is necessary ( for sb. ) to do sth.
该句型与上一个同属一个句型，如果不定式的逻辑主语是由 for引起，主句中的形容词通常是表示重要性，紧迫性，频繁 程度，难易，安全等情况的形容词。 常见的形容词有：① important， necessary， natural ② easy ， safe ， common ， normal ， hard ， difficult ， dangerous ， unusual， rare ， impossible ， pleasant 等。 在①中的形容词作表语可以用从句改写， 如：
⑵.也可以指动物或婴儿(不知性别/未知性别的婴儿或孩子):
Is this your dog？No, it isn’t.
⑶.用来泛泛的指某件事:
It was a great surprise to me when he did a thing like that．
⑷.也可指抽象事物:
It is a shame, isn’t it? You are going to be married this time？When is it？
21
5. It is a pity ( a shame ... ) 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. 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！
该句型和上一个同属一个句型；由于主句中的形容 词不同，that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句 型中的形容词。
It is important that we (should) learn English well. It is necessary that he (should) remember these words.
Just leave it to me to do .
他想当然的以为女朋友会再回来。
He took it for granted that his girlfriend would
come back again.
14
三、形式主语:
15
形式主语
高考真题
1. _I_t _is necessary to be prepared for a job interview. Having the answers ready will be of great help.
16
形式主语
… possible It is / was + adj. necessary + ( for sb. ) to do sth. / clause important
…
… one’s duty It is /was + n. one’s hope + clause /( for sb. ) to do sth. an honour …
It is important for her to come to the party. = It is important that she (should ) come to the party.
20
4. It is important ( necessary， strange， natural...) that ...
22
7. It is suggested ( ordered /demanded/insisted/commanded... ) that ...
该句型和上一个同属一个句型，主句中的过去分词是表示请求， 建议，命令等词时，that 后的从句要用虚拟语气（should + 动词原形），should 可以省；常译为＂据建议；有命令．．．） It is suggested that the meeting ( should ) be put off. It was ordered that we ( should ) arrive there in two hours. 8 It is said (reported， learned....) 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 earth satellite has been put into orbit.
⑶.指环境:
It was very quiet in the café.
⑷.指距离：
It is half an hour’s walk to the city centre.
5
二、形式宾语:
6
形式宾语1
The chairman thought ___ necessary to invite Professor Smith to speak at the meeting.(05全国)
A. that B. it C. this D. him
Sentence patterns:
…
…
find
possible
1. S+ think + it + necessary +( for sb. ) to do sth./clause
feel
important
…
…
7
形式宾语2
I think it his duty to clean the blackboard.
13
形式宾语特殊用法3
动词 +it + to sb. + that… owe it to sb. that…把…归功于… leave it to sb that…把…留给某人去做 take it for granted that 把…想当然 keep it in mind that… 把…记在心里 例 1.Don't bother to tidy your room.
1.S +
…
…
find
possible
think + it + necessary +( for sb. ) to do sth. /clause
feel
important
…
…
2. S+ V + it +
… a rule one’s duty + ( for sb. ) to do sth. /clause an honour …
It is very clear that he’s round and tall like a tree. = That he’s round and tall like a tree is very clear.
18
2. It is kind ( of sb. ) to do sth.
该句型中的不定式短语是真正主语，如果不定式的逻 辑主语是由 of引起，主句中的形容词必须是能表示逻 辑主语特征的形容词。 常见的有： bad ， brave ， careless， clever ， cruel ， foolish ， silly ， stupid good （好心的）， honest ， horrible ， kind ， lazy ， modest ， naughty ， nice（有教养的）， polite， rude ， wise ， wrong（错误的）等。 这个句型可以改写为： sb. is kind to do sth. 。
…
said
It is / was p.p. known + that-clause
believed
…
17
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，肯定．．．）” 是主语从句最常见的一种结构。
11
动词 +it + that + clause
enjoy, like, / love, dislike, appreciate hate, don't mind, be fond of, feel like, see to / depend on / insist on
例 : I hate it you can dance so well but I can't.
①不定式短语②动名词短语③引导的宾语从句。 We think it our duty to clean our classroom. He felt it important learning English well. They found it difficult that they would finish their work in two days.
no good
3. S + V + it +
+ doing sth.
no use
9
形式宾语归纳
该句型中的it 作形式宾语，记忆方便---“6123结构”。
6 主句中常用的动词： think,believe,make,find,consider,feel； 1 形式宾语it； 2 宾补的两种形式：形容词或名词； 3 真正宾语的三种形式：
包含介词的动词短语(如see to, depend on等)后接宾
语从句,必须先由it担任形式宾语,再接从句.
Sentence patterns:
1. I like (enjoy, hate…) it when….
2. I would appreciate it if…
3. …see to (depend on…) it that…
Sentence patterns:
2. S+ V + it +
… a rule
one’s duty + ( for sb. ) to do sth. /clause an honour
…
3. S + V + it +
no good no use
Baidu Nhomakorabea
+ doing sth.
8
形式宾语句型
Sentence patterns:
12
形式宾语特殊用法2
动词+ it+ as+ noun/adj. + 从句 (把….视为….) accept, regard, take, see, view
例: The speaker takes it as encouraging when many students attend his lecture.