Unit7 What's the highest mountain in the world 单元知识点讲解及练习（无答案） 人教版八年级英语下册

八下Unit 7
短语
1.run over with excitement 兴奋地跑过去
2.walk into sb. 撞到某人
3.die from……死于……
4. fall over 被…绊倒
5. cut down the forests 砍伐林木
6. endangered animals 濒危动物
7. the importance of saving these animals 拯救这些动物的重要性
8. be in danger 处于危险之中
9. make more homes for the pandas为大熊猫建造更多的家园
10.wild animals野生动物sea life海洋生物
11. protect … from…保护…免于…的伤害
12.stop putting rubbish into the sea停止往大海里丢垃圾
13. in the remaining forests在剩下的森林里
单元知识点讲解
1.weigh既可作及物动词，表＂称重＂，也可作连系动词，表＂有……重；重＂。
2.time在此意为＂倍数，次数＂，表示三倍或三倍以上时使用。
3.up to到达(某数量、程度等)；至多有；不多于。
birth n. 出生;诞生。
5.prepare sth. for sb./sth. 给……准备……。
6.awake与wake
7.excitement n. 激动；兴奋。
8.fall down、fall off、fall over
9.feed (fed，fed)作及物动词，意为＂喂养，饲养＂，强调动作。
10.die动词，意为＂死＂，过去式为died，现在分词为dying。
讲解版
1.weigh既可作及物动词，表＂称重＂，也可作连系动词，表＂有……重；重＂。
名词形式为weight。
in weight在体重方面。
2.time在此意为＂倍数，次数＂，表示三倍或三倍以上时使用。
表示 ＂A 比B长（宽、高、大、重等）N倍＂时，其结构为＂A＋be＋基数词（N＋1）＋times＋形容词比较级＋than＋B ＂。
3.up to到达(某数量、程度等)；至多有；不多于。
live up to指＂活到……岁＂。
birth n. 出生;诞生。
at birth出生时
date of birth出生日期
give birth to生孩子
5.prepare sth. for sb./sth. 给……准备……。
prepare sb. for sth. 使某人对某事有所准备
prepare to do sth. 准备做……
6.awake与wake
awake形容词，意为“醒着”，常用作表语
wake动词，意为“弄醒；醒”，常与副词up连用
7.excitement n. 激动；兴奋。
excite 动词，意为＂使兴奋，使激动＂。
exciting 意为＂令人兴奋的＂，主语一般是物，在句中作表语或定语
excited 形容词，意为＂兴奋的＂，多指人受到事物的影响，主语一般是人，在句中作表语。be excited about表示＂对……感到激动＂。
excitement 名词，意为＂激动，兴奋＂。 to one’s excitement意为＂使某人兴奋的是＂。
8.fall down、fall off、fall over
fall down 强调的是＂向前摔倒、跌倒＂，后面不接宾语。
fall off 强调的是＂滑倒、倒下＂，后面接宾语时应加上介词from。
fall over[] 强调的是＂跌落、从……掉下来＂，后面不接宾语。
9.feed (fed，fed)作及物动词，意为＂喂养，饲养＂，强调动作。
feed sb./sth.喂养某人或某种动物。
feed... to... 把……喂给……；
feed on... 以……为食。
10.die动词，意为＂死＂，过去式为died，现在分词为dying。
die from表示＂死于(创伤、劳累、忧愁等外部原因)＂。
die of 表示＂死于……病＂或死于饥饿或过度悲伤等自身原因
练习
单项选择
1.Alex did the project on community service ______ better than his classmates.
A.so B.very C.too D.much
2.We have done much to protect the environment. So the river is getting _____ than before.
A.dirtier B.dirty C.cleaner D.clean
3.—This dress was last year’s style.
—I think it still looks perfect it has gone out this year.
A.so that B.as if C.even though D.ever since
4.一The government is plenty of money building the countryside.
—We are pleased with the government's efforts.
A. costing B. paying C. taking D. spending
5．In the world, more than 10 million people die ________ hunger every year.
A．up B．from C．at D．for
6.The soldier succeeded ____ the boy in the river.
A. save B. in saving C. to save D. saves
7.Our head teacher is always the first and the last .
A. come；leave B.to come；leave
C. to come; to leave D. came; left
8. I think the phubbers(低头族) are supposed to 　　　 the time they spend 　　　 their smart phones.
A.cut off;in B.cut down;on
C.cut up;on D.cut down;in
France is 　　　 European country while Thailand is 　　　 Asian country.
A.an;an B.an;a C.a;a D.a;an
10.—Did you meet any problems while you were climbing the mountain
—Yes.As you know,it’s hard to 　　　 air as you get near the top of the mountain.
A.fall over B.pick up C.take in D.put away
用所给词的适当形式填空
1.I want to know the____________ (weigh) of the vegetables.
2.My sister couldn't get to sleep.She was still_________ (wake).
3.The boys were running in　_______ (excite).
4.Thousands of _________(tour) come to visit the park every day．
5.Don't worry. The _______ (keep) can take good care of the animals.
6．I was afraid of the______(dark) in my room at night when I was very young.
7．I will tell you the __________ (true) when you come to my office next time.
8．We enjoyed __________ (we) on the beach last summer holiday.
9．We made an important ________ (decide) at the end of the meeting.
10．Melissa is so good at ______________ (repair) cars.
三、根据汉语提示写单词
1.I like to swim in the ___________（海洋）when it's warm.
2.My house is not far from school. It is less than 500 ___________（米）.
3.Don't swim in the ___________（深的）water. It's dangerou8.
4.The tour ___________ (包括）a visit to the Disneyland, so you needn't pay for the tickets.
5.Everyone should do something to ___________（保护）our environment.
6.England is an English-speaking country in ________（欧洲）.
7.An ______ （成年的）elephant is about 350 cm tall.
8.The Great Wall is an _______（古代的) man-made object．
9.We should love _____________（自然）.
10.It’s __________（危险的）for you to swim alone in the river.
四、补全对话
从方框中选择最佳选项完成对话。
A. Is man the longest living animal in the world
B. how long can a butterfly live
C. it depends on what kind of dog it is.
D. how much does an insect weigh
E. an ordinary cat weighs about a few kilos.
Teacher: Does anyone know how heavy a cat is
Boy: I think　1
Teacher: And　2　
Girl: Only a few grams, I’m sure.
Teacher: Right. So. . . A cat weighs many times more than an insect.
Girl: And what about the difference between a dog and a giant panda in size
Teacher: Well, 　3　But I would say that a big dog is just less than half the size of a giant panda.
Boy: I have a question! 　4　
Teacher: No, that’s a giant turtle. But a man can live for nearly a hundred years nowadays. That’s quite long.
Boy: And　5　Can it live as long as a man
Teacher: No, a butterfly only lives for a few days.
Girl: What a short life!
Teacher: Yes, many insects have very short lives.