must表示推测时: They must be playing basketball, mustn't they? 他们肯定在打篮球.是不是?. You must be more careful. 你必须更小心. (1) 情态动词must意为“必须 .“应该 .表必要性,用第一人称时.表示说话人认为有义务.有必要,用第二.第三人称时.表示说话人的命令或要求别人做某事.其否定形式为mustn’t.意思是“不应该 .表示“禁止 .“警告 .回答must引出的问句时.否定回答常用need not或don’t have to表示“不必 .例:-Must I finish my homework before eight? 我必须在八点前完成作业吗? -Yes, you must. / No, you needn’t. 是的.你必须这样./不.你不必这样. 但在带有must的反意疑问句中.其后半句简略疑问式不能用needn’t.仍用mustn’t. 例: She must do the work, mustn’t she? (2)must在肯定句中可以表示“一定是 .表示不可避免性.肯定性.把握大的推测.此时.它的否定式应用can’t.表示“不可能 .例: It must be more delicious in the paper bags, in the open air. 在户外.装在纸袋里一定会更美味. 注意:have to也有“必须 的意思.它有时态和人称的变化.而must没有.另外.must带有主观因素.意为“一定 .而have to带有客观因素.意为“不得不 查看更多

 

题目列表(包括答案和解析)

  This story is __1__ two mice(老鼠). They __2__ friends. One mouse(老鼠)lives in the country. The __3__ one lives in the city. After many years the country mouse sees the city mouse. He says, “Come and see me __4__ my house in the country.” So the city mouse goes. The country mouse __5__ him to his house in the fields. He gives him his nicest food. But the city mouse says, “This food is no good, and your house is no good. Why do you live in a hole(洞)in the fields? You must come and live __6__ me in the city.”

  So the country mouse goes to the house of the city mouse. It is a very good house. Nice food is ready __7__ them to eat. But just as(正当……时)they begin to eat, they hear a great noise(响声) The city mouse cries(喊).“Run! Run! The cat is __8__ !” The two friends run __9__ quickly and hide(藏)in a dark hole.

  __10__ some time they come out. The country mouse says to the city mouse. “I don't __11__ to live in the city. I like to live in my hole __12__ the fields. It's nicer __13__ poor(贫穷)and happy than __14__ rich(富有)and live __15__ fear(恐惧).”

1. A. about           B. for              C. to               D. /

2. A. be             B. are              C. make            D. like

3. A. others            B. another            C. other             D. next

4. A. at              B. in                C. to               D. about

5. A. takes           B. carries           C. bring             D. gets

6. A. for              B. and             C. with              D. to

7. A. let             B. give             C. for              D. to

8. A. leaving           B. coming            C. come            D. leave

9. A. away           B. from             C. too             D. to

10. A. Before         B. After             C. With             D. At

11. A. enjoy           B. like              C. think             D. want

12. A. at              B. for              C. in               D. on

13. A. be             B. is                C. are              D. to be

14. A. be             B. is                C. are              D. to be

15. A. on             B. in                C. inside            D. /

 

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Hundreds of years ago, life was harder than it is today. People didn’t have modern machines. There was no medicine, either.
Life today brings new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and we become angry more easily. Air pollution is the most serious kind of pollution to all living things in the world.
Cars, planes and factories all pollute our air every day. Sometimes the polluted air is very thick. People cannot see the sky clearly.
Many countries are making rules to fight against pollution. Factories now must clean their water before they throw it away. And they mustn’t let dirty smoke go into the air.
There are many things we can do to fight against pollution. We should put waste things in dustbins and do not throw them on the ground. We should go to work by bike or on foot instead of taking a car or a bus. If there are fewer people driving, there will be less pollution.
Rules are not enough. We should do our best to fight against pollution.
【小题1】Which of the following is NOT true about life in the past?

A.There were no modern machines.
B.There was no modern medicine.
C.There was much air pollution.
D.There were not many people.
【小题2】What should people do to fight against pollution?
A.Always drive a car to work.
B.Throw waste things anywhere they like.
C.Put waste things in dustbins.
D.Always take a bus to go to school.
【小题3】The most serious pollution is              .
A.water pollution
B.air pollution
C.noise pollution
D.light pollution
【小题4】What should factories do to fight against pollution?
A.Let dirty smoke go into the air.
B.Throw dirty water away without cleaning it.
C.Close the factories.
D.Let dirty water go after cleaning it.
【小题5】From the passage, we know that              .
A.a few years ago, there was no pollution at all.
B.people today don’t have to talk to each other loudly
C.we can drink water from the polluted rivers and lakes.
D.Everybody should try his or her best to fight against pollution
 

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When you feel sad, tears will come down from your eyes. When you are happy, especially when you laugh hard, tears will also come down from your eyes. But tears have a more important job than showing your feelings.

Tears keep your eyes clean and healthy. They wash away dirt and germs just like bath. Your eyes also need tears to keep them wet. And eyes must be wet so that they can move smoothly. Your eyes are busy looking here and there all day long. They move quickly from one thing to another. If you didn’t have tears, your eyes couldn’t move, and soon you would be blind.

Maybe you don’t like tears, but your eyes can’t do without them.

1.The story tells us ____.

A.what makes people blind

B.why people have tears

C.why people cry when they are sad

D.what tears are

2. Tears help you by ____.

A.showing how you feel

B.making your face clean

C.washing things from your eyes

D.making your eyes bright

3.If your eyes were not wet, you could not____.

A.look at things clearly

B.laugh and cry

C.keep clean

D.show your feelings

4. When you are happy or sad, you may ____.

A.look at things quickly

B.wash away dirt and germs

C.have tears in your eyes

D.move your eyes quickly

5. The sentence “your eyes can’t do without them” means ____.

A.your eyes like having baths very much

B.your eyes like tears very much

C.your eyes can’t work without tears

D.your eyes can’t open without them

 

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正误判断
In the United States, children start school when they are five years old. In some states they must stay in school until they are sixteen. Most students are seventeen or eighteen years old when they leave secondary(中等的) schools. There are two kinds of schools in the United States: public schools and private(私立的)schools . Most children go to public schools. Their parents do not have to pay for their education because the schools receive money from the government. If a child goes to a private school, his parents have to get enough money for his schooling. Some parents still prefer private schools, though they are much more expensive. Today about half of the high school students go to universities after they finish the secondary school. A student at state university does not have to pay very much if his parents live in that state. But many students work while they are studying at universities. In this way they develop good working habits and live by their own hands.
【小题1】Children can go to school at the age of four in the U.S.
【小题2】Most parents prefer to send their children to private schools in America.
【小题3】About fifty percent of high school students can go on to universities after they leave the secondary school today.
【小题4】Lots of American students go to universities by depending on their parents completely (完全地).
【小题5】The passage is mainly about American education.

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What must you do when you get a present for your birthday? You have to sit down and
w 【小题1】 a thank-note. The words“thank you” are very important. We have to use them very
o【小题2】We say them when someone gives us a drink, h【小题3】us to pick up things,
or lends us a book.
Another i【小题4】word is “please”. Many people forget to use it. It is not polite to ask someone to do something without s【小题5】“please”. We have to use it w【小题6】we ask for something, too. It may be a book or a pencil, more rice or help.
We have to l【小题7】to say “sorry”, too. If we hurt (伤害)someone, we’ll have to go up to say “we’re s【小题8】”. When we forget something, we will a【小题9】say “sorry”.
These three words are easy b 【小题10】 important. Our children must learn to use them. They are pleasing(令人高兴的) words to use in any language(语言).

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