牛津译林版英语9B Unit1 Grammar课件(共26张PPT)
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（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，hard，necessary，impossible， likely，right，wrong，important， obvious，useful，useless，dangerous…
it/ one/ that 的区别
1. I can’t find my pen. I’m going to buy _o_n__e_. 2. Life today is better than __th_a_t__ in the old days. 3. I can’t find my pen. I must have lost __i_t __.
2 It’s foolish of you to quit your job now.
2021/5/2
3.It is no good crying over spilt milk. 4.It is no use casting pearls before swine .
在句3与句4中，it的作用是_形__式__主__语__, 真正主语 是__动__名__词__短__语__.
eg: 1. It is illegal（for a teenager）to drive a car without a license. 2. It is necessary for you to give him a letter.
Conclusion：
在句1和句2中 it 的作用是形___式__主__语__,真正主语是 不___定__式___短。语
构成如下结构： It is +no use/no good/not any good/not any use+ doing sth.
2021/5/2
Read and analyze the following sentences. • It is obvious that the water was to blame. • Is it possible that he will become the chairman of
一般说来，在指代身份或性别明确的人时，通 常要根据情况用代词he／she；若是指代身份 或性别不明的人，则用代词it
Back
Read and analyze the following sentences.
• It is Friday today. Date
• It was very cold last Monday. • It is about 8:30 now. time
__i_t __用来指代前面提到的可数名词，所指的是事物本身； __o_n_e__则用来替代前面出现过的可数名词，泛指，指一类
事物中的一个 .
_th__a_t__用来代替不可数名词或单数可数名词，特指。
二、It 作为形式主语
当不定式、动名词、从句等用作句子主 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.
our country? • It is amazing that at my age I still look like a
student!
• Analysis：it是__形__式__主语 ,句子真正的主语是—— __t_h_a_t_引__导__的__主语从句
Conclusion：It is+ _a_d_j_. + that从句
2021/5/2
（2）It +be+ adj+ of sb. to do sth
此处adj. 通常为描述人的形容词：kind， unkind，nice，rude，cruel，considerate， careless，foolish，stupid，wise，crazy.
eg: 1. It‘s kind of you to help me with the problem. 某人做某事某人是…….
• 2. 非人称代词 有时并不指具体的东西，可指时间、日期、天气、距离等 It was very quiet in the classroom. It is half an hour’s walk to the city.
1.用作人称代词。
1) Who’s it? ____It_____is me. 2) Look at the picture. __I_t__is a picture of our
weather
• It is about 25km from Longxian to Bazi.distance
• It lies in the south of Shaoguan city.
place
• It is 40°C ! You got a high fever! Temperature
Conclusion :it 可以用作非人称代词，表示 _日__期__,_天__气__,_时__间___,_距__离___,_地__点___,_温__度__等。
The use of “It”
It is so lovely
It’s raining
It is sleeping
It’s 10 o’clock
一、It 作为代词
• I.人称代词 a.指代动物或者无生命事物 b.指代未知性别的婴儿或孩子 c.指代不认识的人 d.指代上文提到的一个动作、一种情况、或者一个主意等
It is said (reported....) 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。
It is said that…
school.
3)---Is this jacket yours? ---Yes, __It____is.
4) a. Jim is at the door．__C__wants to see you． b. Someone is at the door．____must be Jim．
A. That, It B. It, He C. He, It D. Who, He
此处adj. 通常为描述事件的形容词：easy， difficult，hard，necessary，impossible， likely，right，wrong，important， obvious，useful，useless，dangerous…
it/ one/ that 的区别
1. I can’t find my pen. I’m going to buy _o_n__e_. 2. Life today is better than __th_a_t__ in the old days. 3. I can’t find my pen. I must have lost __i_t __.
2 It’s foolish of you to quit your job now.
2021/5/2
3.It is no good crying over spilt milk. 4.It is no use casting pearls before swine .
在句3与句4中，it的作用是_形__式__主__语__, 真正主语 是__动__名__词__短__语__.
eg: 1. It is illegal（for a teenager）to drive a car without a license. 2. It is necessary for you to give him a letter.
Conclusion：
在句1和句2中 it 的作用是形___式__主__语__,真正主语是 不___定__式___短。语
构成如下结构： It is +no use/no good/not any good/not any use+ doing sth.
2021/5/2
Read and analyze the following sentences. • It is obvious that the water was to blame. • Is it possible that he will become the chairman of
一般说来，在指代身份或性别明确的人时，通 常要根据情况用代词he／she；若是指代身份 或性别不明的人，则用代词it
Back
Read and analyze the following sentences.
• It is Friday today. Date
• It was very cold last Monday. • It is about 8:30 now. time
__i_t __用来指代前面提到的可数名词，所指的是事物本身； __o_n_e__则用来替代前面出现过的可数名词，泛指，指一类
事物中的一个 .
_th__a_t__用来代替不可数名词或单数可数名词，特指。
二、It 作为形式主语
当不定式、动名词、从句等用作句子主 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.
our country? • It is amazing that at my age I still look like a
student!
• Analysis：it是__形__式__主语 ,句子真正的主语是—— __t_h_a_t_引__导__的__主语从句
Conclusion：It is+ _a_d_j_. + that从句
2021/5/2
（2）It +be+ adj+ of sb. to do sth
此处adj. 通常为描述人的形容词：kind， unkind，nice，rude，cruel，considerate， careless，foolish，stupid，wise，crazy.
eg: 1. It‘s kind of you to help me with the problem. 某人做某事某人是…….
• 2. 非人称代词 有时并不指具体的东西，可指时间、日期、天气、距离等 It was very quiet in the classroom. It is half an hour’s walk to the city.
1.用作人称代词。
1) Who’s it? ____It_____is me. 2) Look at the picture. __I_t__is a picture of our
weather
• It is about 25km from Longxian to Bazi.distance
• It lies in the south of Shaoguan city.
place
• It is 40°C ! You got a high fever! Temperature
Conclusion :it 可以用作非人称代词，表示 _日__期__,_天__气__,_时__间___,_距__离___,_地__点___,_温__度__等。
The use of “It”
It is so lovely
It’s raining
It is sleeping
It’s 10 o’clock
一、It 作为代词
• I.人称代词 a.指代动物或者无生命事物 b.指代未知性别的婴儿或孩子 c.指代不认识的人 d.指代上文提到的一个动作、一种情况、或者一个主意等
It is said (reported....) 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。
It is said that…
school.
3)---Is this jacket yours? ---Yes, __It____is.
4) a. Jim is at the door．__C__wants to see you． b. Someone is at the door．____must be Jim．
A. That, It B. It, He C. He, It D. Who, He