八年级(下)　Units 7—8
　对于物体长、宽、高、深度、面积的表达 (八下Unit 7 P49) 
【举例透析】
20米长    20 meters long/in length       
10米宽    10 meters wide
15米深    15 meters deep/in depth       
150平方米  150 square meters
(对于物体长、宽、高、深度、面积的表达：数词＋单位名词＋adj.或in＋n.)
This is a 160­meter­high tower.这是一座160米高的塔。
(也可用“数词­单位名词­形容词”,常用作定语。)
1.珠穆朗玛峰高8 844.43米。
Qomolangma is 8,844.43 __meters__ __high__.
2.我在动物园看到一条长2米的蛇。
I saw a __two－meter－long__ snake in the zoo.
　population (八下Unit 7 P50)
【举例透析】
①China has the biggest population in the world.中国有世界上最多的人口。
China has a large/big population but Singapore has a small population.中国人口多但新加坡人口少。
(population作名词,意为人口；修饰人口多少用：large/big或small)
②—How large/What is the population of China?  中国的人口有多少？
—It has a population of over 1.3 billion.它有超过13亿的人口。
(询问人口多少时用：How large…？/What's…？)
③The world's population is increasing faster and faster.全世界的人口增长越来越快。
About 70% of the population in China are farmers.大约中国人口的70%都是农民。
(population 是一个集合名词,视为整体,做主语时谓语动词用三单形式,但主语是表示人口的几分之几的时候谓语动词要用复数形式。)
④New York is a big city with a population of over 10 million.纽约是一个有着超过一千万人口的大城市。
(population可作可数名词,前面加不定冠词。)   
 
(A)1.The population of China ______ large.About four fifths of the population ______ farmers.
              　
A.is；are  B.are；is  C.are；are  D.is；is
2.(眉山中考)中国是世界上人口最多的国家。
The__population__ of China is the __largest__ in the world.
　succeed (八下Unit 7 P51)
【举例透析】
You won't succeed if you don't put your mind to your work.如果你不把心放在工作上,你将不会成功。
He is certain to succeed in doing his experiment.他确信他的实验会成功。
(succeed作动词,意为“成功”,不能用于被动语态。常见搭配： succeed in sth./doing sth.成功做成某事；名词：weight短语success；形容词：successful；副词：successfully。)
1.He __succeeded__(success) in passing the final exam with Mr.Li's help.
(C)2.After three days' hard work,he succeeded  in ____ planting those trees.
A.finished      B.finishes     
C.finishing  D.to finish
(A)3.(盐城中考改编)Work hard and you'll have a big______.
A.success  B.problem  C.pride  D.trouble
　achieve (八下Unit 7 P51)
【举例透析】
①He achieved his dream of becoming an engineer.他实现了当工程师的梦想。
(achieve作动词；achieve our dreams＝ make our dreams come true,其中achieve表示“通过努力实现；取得；获取……”,主语一般为人。) 
②As a famous player,he has many remarkable achievements.作为一名著名的运动员,他有很多非凡的成就。
(achievement作名词,意为“成就”。)
1.China has made great __achievements__(achieve) in the last 30 years.
(B)2.If you never give up,you will ______ dreams.
Ae true      B.achieve     
C.came true    D.achieved
　倍数表达法 (八下Unit 7 P53)
【举例透析】
once 一倍　twice两倍　数词＋ times 三倍及以上
①The hall is five times bigger than our classroom.这个大厅比我们的教室大四倍(是我们教室的五倍)。
(“A＋谓语＋倍数＋形容词或副词的比较级＋than＋B”表示 “A比B大(长、高、宽等)多少倍”)
②This table is three times as long as that one.这张桌子是那张桌子的三倍长。
(“A＋谓语＋倍数＋as＋形容词或副词的原级＋as＋B”表示 “A是B的多少倍”)
③His father is twice the height of him.他父亲的身高是他的两倍。
(“A＋谓语＋倍数＋the height/weight/lenght＋of＋B”表示“A的高度/重量/长度……是B的多少倍”)
(C)Adult tigers weigh ____ than baby tigers.
A.much lighter      B.a lot heavy   
C.three times heavier  D.three times more
　weigh (八下Unit 7 P53)
【举例透析】
①Mr.Wang weighs 60 kilos.王先生体重60千克。(表示“重(多少)”,是连系动词)
②He weighed the fish.他称了这条鱼。(表示“称……的重量”,是及物动词。)
③It is about 20 kilos in weight.这东西重约20千克。
  My sister is trying to lose weight.我正在设法减肥。
(weight作名词,意为重量；常见短语：lose weight 减肥；put on weight增肥)
④What's the weight of the sheep? 这只羊的重量是多少？
(问重量：What’s the wight of……？) 
选用weigh,weight填空。
1.Can you guess the __weight__ of the panda?
2.The little bear __weighs__ 70 kilos now.
　辨析already 与 yet (八下Unit 8 P57)

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。