Unit 3 The Earth 第五讲 Protect the Earth 精讲精练（含答案）

中小学教育资源及组卷应用平台
Unit 3 The Earth Protect the Earth
一、难点精析
1. About 70% of the Earth is covered by water. 地球表面70%被水覆盖。
be covered by由······覆盖
The mountain is covered by snow.这座山由雪覆盖着。
About 80% of this street is covered by clothes shops.这条街80%的店铺是服装店。
2. Some places are very hot, and some are very cold.有些地方非常炎热，有些地方却非常寒冷。
some...some...有些······有些·····
some students are from the south，and some students are from the north.
有些学生来自南方，有些学生来自北方。
3.The Earth provides us with air, water and food.地球给我们提供空气、水和食物。
provide...with...为······提供·····
Mom provides us with delicious moon-cake in the Mid-autumn Day.
妈妈在中秋节那天给我们备好了美味的月饼。
My aunt provided her daughter with a pretty hat.
我的姑姑为她女儿准备了一顶漂亮的帽子。
4. Today, there is a lot of pollution.现在有很多污染。
a lot of... 很多 = lots of
There are a lot of foreigners in Guangzhou. 广州有很多外国人。
I have a lot of toys and I like them very much.我有很多布娃娃，我非常喜欢这些布娃娃。
5. We must stop doing these things.我们必须停止做这些事情。
stop doing sth停止正在做某事, doing是stop的宾语，是要停止的动作。
stop to do sth停下来开始做某事，to do是stop的状语，表示目的，是要开始做的事。
The two women stopped talking when they saw the man.
这两名女士一见到那个男士就停止了讲话。
The two women stopped to talk to the man when they saw him.
这两名女士一看到那个男士就停下来和他讲话。
It is important for us to protect the Earth for our future.
为了我们的未来，保护地球对我们来说是非常重要的。
It is important for sb.to do...做某事对某人来说很重要
It is very important for us to study hard in the school.
在学校努力学习对我们来说很重要。
It is very important for us to protect water from polluting.
保护水不受污染对我们来说非常重要。
习题精练
(一)单项选择。
1. _____ something wrong with my ear. Can I use yours
A. It is B. It was C. There is D. There was
2. Mr. Liu asks the students _____ in the river, because it's too dangerous.
A. swim B. to swim C. not to swim D. not swimming
3. There's going to _____ in tomorrow's newspapers.
A. have something new B. have new something
C. be something new D. be new something
4.----There is no air or water on the moon. Is there ----_____.
A. Yes, there are B. No. there isn't C. Yes, there isn't D. No, there is
5. _____ is there on the table
A. How many apples B. How much bread
C. How much breads D. How many food
6. There _____ pencil-box, two books and some flowers on the desk.
A. is a B. are some C. has a D. have some
7. The boys have got _____ already.
A. two bread B. two breads
C. two pieces of bread D. two pieces of bread
8. We can't work out the Maths problem. Can you tell us _____
A. how to do B. what to do it C. how to do it D. what should to do
9. It is very important for us _____ English well!
A. learn B. to learn C. learning D. learned
10.----There goes the bell.
----It is time for class. Let's stop _____.
A. talk B. talks C. to talk D.talking
(二)根据中文意思，完成下列句子。
1.We should ________________________________________________(保护地球).
2.________________________(对我们来说很重要)to keep animals and plants alive.
3.Every one on the land____________________________________(需要空气生存).
4. The factories________________________________________(向河流倒入废水).
(三)单词拼写。
1. About 80% of the mountain is c_______ by tree.
2. We must s______ walking loudly in the church.
3. What can we do to p_____ the Earth.
4. Air p_____ come from exhaust gas (废气) of ears.
5. The Earth p_____ people with air, water and food.
答案：Protect the Earth
(一)l-5 : ACCBB 6-10 ACCBD
(二)1. protect the Earth
2. It is very important for us
3. needs air to serve
4. put waste water into the river
(三) 1. covered 2. stop 3. protect 4. pollution 5. provides
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