Unit 1 Asia Grammar 课件(共27张PPT)

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名称 Unit 1 Asia Grammar 课件(共27张PPT)
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更新时间 2022-06-06 21:40:43

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(共27张PPT)
Unit 1 Asia
Grammar
New words and expressions.
take up 占据(空间);占用(时间)
quarter n. 四分之一
either det.&pron. 两者之一
level n. 水平
service n. 服务;工作
情景导学
It is so lovely.
It’s raining.
It is sleeping
It’s 10 o’clock.
知识讲解
The use of “It”
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
一、It 作为代词
Who’s it _________is me.
Look at the picture. _____is a picture of our school.
3)---Is this jacket yours
---Yes, ______is.
用作人称代词。
It
It
It
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.
Read and analyze the following sentences.
It is Friday today.
It was very cold last Monday.
It is about 8:30 now.
It is about 1010km from Beijing to Nanjing.
It lies in the south of Shaoguan city.
It is 40°C ! You got a high fever!
Conclusion :it 可以用作非人称代词,表示_____,_____,______,______,______,_____等。
date
weather
time
distance
place
temperature
日期
天气
时间
距离
地点
温度
1. I can’t find my pen. I’m going to buy _____.
2. Life today is better than ______ in the old days.
3. I can’t find my pen. I must have lost _____.
_____用来指代前面提到的可数名词,所指的是事物本身。
______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。
______用来代替不可数名词或单数可数名词,特指。
one
that
it
it
one
that
it/ one/ that 的区别
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.
二、It 作为形式主语
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:
句1和句2中 it 的作用是_________,真正主语是 __________。  
形式主语
不定式短语
(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,hard,necessary,impossible,likely,right,wrong,important,obvious,useful,useless,dangerous…
(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.
某人做某事某人是…….
1. It's kind of you to help me with the problem.
2. It’s foolish of you to quit your job now.
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_________, 真正主语是____________.
形式主语
构成如下结构:
It is +no use/no good/not any good/not any use+ doing sth.
动名词短语
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 our country
It is amazing that at my age I still look like a student!
Analysis:it是____________, 句子真正的主语是___________________
形式主语
that引导的主语从句
Conclusion:It is+ ____+ that从句
adj.
It is said that…
It is reported that…
It is supposed that…
It is hoped that…
It is well known that…
It is generally considered that…
It is suggested that…
据报导……
据推测……
希望……
It is said (reported....) that ...
句型中it 仍是形式主语,真正主语是that引导的主语从句。
众所周知……
普遍认为……
有人建议……
据说……
1.吸烟危害健康,这是事实。
2.碰巧我们在同一间大学 。
3.据说日本发生了地震。
4.有人建议他应该立刻戒烟。
It is suggested that
It is said that
It is a fact that
It happens that
smoking does harm to health.
we are in the same college.
there is an earthquake in Japan.
he should quit smoking at once.
1. I found it very interesting to study English.
我发现学英语非常有趣。
2. I think it no use arguing with him.
我认为和他争吵没有用。
3. He made it clear that he was not interested in this subject.
他非常清楚地表示他对那门学科不感兴趣。
小结:it在句中充当_________,真正宾语可以由______ 以及________短语充当, 还可以由______引导的宾语从句充当。
不定式
动名词
that
形式宾语
三、it 作形式宾语
总结:当复合宾语中的宾语是不定式、动名词宾语从句时, 往往把真正的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。
动词+it+宾语补足语+不定式(动名词或从句)
Eg. We think it no use complaining.
make it
forget it
believe it or not
Don’t mention it
It doesn’t matter
It(That) depends
Got it
It’s hard to say
It’s up to you to do sth.
take it/things easy
成功,做到,赶上等
别提了,忘了它吧
信不信由你
别提了,表示不用谢
没关系
视情况而定
明白了,懂了
很难说
由你来决定做某事
不要慌,别担心,沉住气
常见的固定用法有:
Rewrite the sentences using an “it” structure.
1 Giving up smoking is difficult. (It is…)
2 Most people believe smoking causes cancer. (It is believe that…)
It is difficult to give up smoking.
It is believed that smoking causes cancer.
3 Don’t try to quit on a stressful day. (It’s no use…)
4 you could suffer from bad health if you keep smoking. (It is likely that…)
It is no use trying to quit on s a stressful day.
It is likely that you could suffer from bad health if you keep smoking.
1. 是到回家的时候了。(quit)
2. 让人惊讶的是在我这个年纪我依然这么健康。
(It is amazing that...)
It is time to go home.
It is amazing that at my age I am still so fit.
课堂检测
3.I _______________ (认为有必要) to take plenty of hot water every day.(think)
4. ______________(据说)the professor has already succeeded in carrying out this expriment.(say)
5.____________________(抱怨是毫无用处的),and they never listen.(use)
think it necessary
It is said that
It is no use complaining
GOOD JOB