摘要： We mustn’t left here. Part Four: Writing. 在你们家.父母给你制定的规定公平吗?你有过快乐的时光吗?写出你要遵守的规定.并以书信的形式描述出来 Yours rules 1 2 3 4 5 Dear , 教后一得: 本单元是让学生学会谈论一些规章制度.比如说:--Can we eat in school? – We can eat in the cafeteria, but we can’t eat in the classrooms./ --Can students wear hats in school? –Yes, we can. ?No, we can’t. 重在对学生进行思想教育.让学生弄明白在什么地方该干什么.不该干什么.通过学习. 学生可以表达一些句子.但.要使学生在实际生活中真正做到.还需要日常学习生活中的灌输运用.

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— Oh, dear. Should we turn right?
— Look at the sign. We mustn't turn right here.
Which sign are they looking at?

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根据对话内容，将方框内符合对话情景的句子写在对话的空白处，使对话恢复完整。其中有两项是多余的。

A: Hurry up, we'll be late for the meeting.
B: Safety comes first, we must ride our bikes carefully.
A:              1
B:               2
A: But there are no policemen in the street now.
B:               3
A: OK. Now the light has turned green.
B:               4
A: Shall we turn to the right?
B: No, this is a one-way street.
A:               5
B: We have to ride on till we get to the next traffic lights.

You must be careful!
Where will we turn right?
Let's go across the street, Tom.
We mustn't go against the rules.
No, don't you see the green light?
Let's go now.
No, don't you see the red light?

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You ________the light．It’s bright enough here．We can see everything clearly．

A.
mustn’t turn off
B.
must turn on
C.
needn’t turn on
D.
may turn on

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根据短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。

Someone says, "Time is money." But I think time is 1. important than money. Why? Because when money is spent, we can get it back. floweret, when time is 2. it'll never 3. . That's 4. we mustn't waste time.

It goes without saying that the 5. is usually limited (有限的). Even a second is very important. We should make full use of our time to do 6. useful.

But it is a pity that there are a lot of people who do not know the 7. of time. They spent their limited time smoking, drinking and 8. . They do not know that wasting time means wasting part of their own 9. . In a word, we should save time. We shouldn't 10. today's work for tomorrow. Remember we have no time to waste.

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Flies (苍蝇) usually live in the dirty places.
Let’s look at a fly, and see where it   27 . First, it flies out of the window,   28   it stands on   29  dirty things in the street, and then it flies back to the house and walks over your   30 .?
When a fly walks on the dirty things in the street, its   31   have got some germs 32 them. When the fly walks on your food with its dirty feet, it   33  the germs on your food.
What can you   34  this?
First, we learn that we mustn’t leave dirty things in the street or on the ground near 35 . Second, we learn that all food must be covered so that flies may not   36  it. Third, we learn that flies often carry germs and we must kill them as soon as we see them.