内容正文:
Unit 4 Natural disasters
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课时 3 语法
目 录
01
课时精讲
02
课时过关
01
课时精讲
单元语法讲解:It用法小结
一、it用作代词,指代物,指前面提到过的同一事物
例如:Yesterday I bought a new bike and it was very expensive.
You mustn't play with knives.It is too dangerous.
二、it也可指代人,一般指不明身份的人
例如:Whose baby mayit be?
Last midnight, someone broke into my room.It must be a thief.
— Who is knocking at the door, Sarah?
— It may be Kate. I invited her here.
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三、it作形式主语
1.it指时间、季节、天气、距离等
例如:It is 8:50.
It is autumn now.
It is raining cats and dogs outside.
It is about a ten-minute ride from my home to the school.
=It is about ten minutes' ride from my home to the school.
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2.用于固定句型“It is/was/will be+形容词+(for/of sb.)+to do sth.”
例如:It is exciting to read comics.
=Comics are exciting to read.
It is warm-hearted of you to help me a lot.
=You are warm-hearted to help me a lot.
It must be very difficult for you to complete the work alone.
=To complete the work alone must be very difficult for you.
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3.用于固定句型“It is no good (no use, no fun) doing sth.”或“It is (great) fun doing sth.”,注意这里的good,use和fun都是名词。
例如:It is great fun walking and cycling in Guilin.
It is no good drinking too much alcohol.
It is no use speaking loudly now. He is out.
4.用于句型“It is/has been+时间段+since三0个0点(从句用一般过去式)”。
例如:It is two years since Kate left here.
It has been two years since Kate left here.
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5.用于句型“It's time to do sth.”或“It's time for sth.”
例如:It is time to have class now.
=It is time for class now.
6.用于句型“It takes/took/will take(sb.)…to do sth.”
例如:It took a long time to build the wall.
=To build the wall took a long time.
It will take me two hours to complete the homework.
=I will spend two hours (in)completing the homework.
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7.用于句型“It's one's turn/duty to do sth.”
例如:It is my turn to give you a talk.
It is everybody's duty to care for the old.
8.用于句型“It seems/seemed/appears/appeared that+从句”;或“It is said/reported that+从句”。
例如:It seems that you are sad.
=You seem to be sad.
It is said that Jack left for the USA yesterday.
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四、it作形式宾语
初中阶段it作形式宾语一般是用于句型“find/think等+it+形容词+to do sth.”。
I found it difficult to help them out.(it在此句中作形式宾语)
=I found (that) it was difficult to help them out.(it在从句作形式主语)
I think it necessary for us to learn English well.(it在此句中作形式宾语)
=I think (that) it is necessary for us to learn English well.(it在从句作形式主语)
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02
课时过关
Ⅰ.选择填空
( )1.Is necessary to complete the design before Christmas?
A.that B.this C.it
( )2.It's necessary notes in class.
A.to take B.taking C.takes
( )3.I think not difficult English every morning.
A.that; keep reading B.it; to keep reading C.that; to keep reading
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C
A
B
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( )4.My mom often tells me is good for my health to go to bed early and get up early.
A.this B.that C.it
( )5.Tim, stop talking. is not allowed to talk loudly in the library.
A.This B.That C.It
( )6.—Do you like English?
—Yes, but I think is a great challenge to learn the language well.
A.that B.this C.it
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C
C
C
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( )7.I like comedies. relaxing to watch them after a day's hard work.
A.It's B.They're C.I'm
( )8. is unhealthy for us to go to school without eating breakfast in the morning.
A.That B.This C.It
( )9. is quite easy for people to find any place in the world with the help of online maps.
A.That B.It C.One
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A
C
B
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( )10.When we got to the park yesterday, started raining.
A.that B.it C.this
( )11.—There are dark clouds, and the wind is blowing strongly.
—It that a typhoon is coming.
A.feels B.hears C.seems
( )12.—How far is your home from here?
— me 30 minutes to get here on foot.
A.It will take B.It will spend C.I will spend
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B
C
A
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Ⅱ.请在横线上写出句子中画线的It指代的是哪一部分。
1. It is impossible for you to get to the top of the Himalayas.
________________________________________________________________
2. It seems that the poor man doesn't want to get others' help.
________________________________________________________________
3. It is nice to read a book on rainy days.
________________________________________________________________
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to the top of the Himalayas
that the poor man doesn't want to get others' help
to read a book on rainy days
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4. It appears that the dog is sick.
________________________________________________________________
5. It is boring to watch the same movie again and again.
________________________________________________________________
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the dog is sick
to watch the same movie again and again
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Ⅲ.语法填空
After more than two online 1.__________ (month) studying, I find that 2.______ is extremely important for the school to produce some excellent online courses 3.___________ (help) more students learn better at home.Here are some 4._______________ (suggest) on how to produce good ones.
First, I suggest that the school select some 5._______________ (experience) and talkative teachers to present the lessons.This will make the online courses more welcome.
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months'
it
to help
suggestions
experienced
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Second, teachers need to improve their online communication and interaction (互动) skills 6._________ are quite different from common classes.Good interaction 7._____________ (make) students get involved a lot.
Finally, the school should provide a good Internet channel 8._______ students, through which students will have 9._____ better view experience.
With these tips, I believe that online courses will be 10._______________
(enjoy) for students to study and review at home.
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which
will make
for
a
more enjoyable
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本节内容到此结束!
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