中小学教育资源及组卷应用平台
外研版八年级下册3单元知识点复习（解析版）
1. communicate（动词）联系；交流
用法：communicate with sb 和某人交流；和某人联系
--communicate with letters 用信件交流
-- In the past ，most people communicated with letters 过去，大多数人用信件交流
--communication（名词）交流；联系
课文原句：Why has no one communicated with us 为什么没有人和我们联系？
例题（1）：
Teenagers have to find a __B____ way to communicate with their parents.
A. fair
B. proper
C. strange
例题（2）：Parents often have trouble __communicating_____ with their kids, because they don’t understand each other.(communicate)
2. impossible（形容词）不可能的
用法：It’s impossible for sb to do sth 做某事对某人来说是不可能的
-- It’s impossible for human to live on the Mars in the near future, isn't it 在不久的将来，人类不可能生活在火星上，不是吗？
课文原句：It is impossible to imagine 这很难想象
例题（1）
I find ___C____ impossible to finish the work by Friday.
A. it’s
B. that
C. it
例题（2）Sarah found it impossible to c_omplete______ this task in a short time.
3. light（名词）光；光线
搭配：electric light 电灯
--turn on the light 开灯
--turn off the light 关灯
--the light turns green 交通灯变绿
-- The electric light is an electrical appliance. 电灯是一种电器。
课文原句：They are very far away and their light has to travel for many years to reach us. 它们离得很远，它们的光必须传播很多年才能到达我们。
例题（1）--Dad, can we walk __B_____ the road now
--No，we _______. We have to wait until the light turns green.
A. across；needn’t
B. across; can‘t
C. cross; mustn’t
例题（2）I used to make l__anterns_____ and light them on the Lantern Festival night.
4.discover（动词）找到；发现
用法: discover one's secret 发现某人的秘密
--discovery（名词）发现
--according to the discovery 根据发现
课文原句：Scientists have also discovered many other galaxies in the universe. 科学家还发现了宇宙中的许多其他星系。
例题（1）It’s important to master computer technology. So I advise you ________ new ways to make computers ___C_____ us better.
A. discovering；serve
B. to discover；to serve
C. to discover；serve
例题（2）Such useful i__nformation_____ can help the police discover the truth faster and more correctly.
5.yet 还
用法：是现在完成时的标志 用于否定句或疑问句句末
-- I haven't washed my clothes yet 我还没洗衣服
课文原句：I haven’t started yet because I’m not sure how to make it. 我还没有开始，因为我不确定如何制作它。
例题（1）
Has the train ___A______ yet
A. arrived
B. reached
C. got
例题（2）The work is not c_ompleted_______ yet, so they have to keep on working at night.
6.just(副词)刚才；刚刚；仅仅
-- Dave couldn't help crying just now. 戴夫刚才忍不住哭了。
课文原句：I’ve just made a model spaceship for our school project. 我刚刚为我们的学校项目制作了一艘宇宙飞船模型。
例题
--Would you like ___B___ sugar in your coffee？
--Yes, but just _______.
A. any; little
B. some; a little
C. some ; little
7.reach（及物动词）到达；抵达
用法：reach sp 到达某地
-- reach the top of the mountain 到达山顶
-- reach every corner of the city 到达城市的每个角落
--reach an agreement 达成一致意见
例题（1）
The boy is ___C___ short _______ reach the apples on the tree.
A. so; that
B. enough； to
C. too； to
例题（2）When we reach the top of the mountain，we feel a sense of a__chievement_______.
8.spaceship（名词）航天器；宇宙飞船
例句：Women's joining in spaceship is a necessary part of space exploration 女性加入宇宙飞船是太空探索的必要组成部分
课文原句：Scientists have sent a spaceship to Mars. 科学家向火星发送了一艘宇宙飞船。
例题（1）
--Do you know __C_______,Mary
--Yes. Perhaps in a few months.
A. why the spaceship returned
B. when will the spaceship return
C. when the spaceship will return
例题（2）My d__ream______ is to take a spaceship to the moon.
9. group（名词）群；组
搭配：a group of… 一群…
课文原句：The sun and its planets are called the solar system，and our solar system is a small part of much larger group of stars and planets. 太阳和它的行星被称为太阳系，我们的太阳系是更大的恒星和行星群的一小部分。
例题
--How many students are there in each group？
--Usually each group __B_____ six students in our class.
A. is made from
B. is made up of
C. is made of
10. environment（名词）环境
搭配：protect the environment 保护环境
--improve the environment 改善环境
-- be friendly to environment 环境友好
课文原句：None of them has an environment like that of the earth，so scientists do not think they will find life on them. 它们都没有像地球那样的环境，所以科学家认为它们不会在上面找到生命。
例题
Peter thinks the environment in his hometown is __B_____ before. Both the air and the water are badly polluted.
A. much better than
B. not so good as
C. more worse than
11.latest（形容词）最近的；最新的
搭配：the latest news at home and abroad 国内外的最新消息
-- It is convenient for us to keep track of the latest news at home and abroad by using mobile phones 使用手机能方便的让我们掌握国内外的最新消息。
课文原句：Have you heard the latest news？ 你听到最新消息了吗？
例题：Next week, some i__nterviewers______ will interview Zhou Dongyu about her latest film.
12.universe（名词）宇宙
搭配：explore the universe 探索宇宙
例题
--In my opinion ，there must be life on other planets though none has been discovered.
--I can’t agree more. The universe is so large__A_____ .
A. after all
B. at all
C. all in all
13.astronaut（可数名词）宇航员
课文原句：Are there any astronauts in the spaceship 飞船上有宇航员吗？
例题：Wang Yaping. China’s first female astronaut to conduct a spacewalk, is __considered\regarded_____(认为) as the pride of the whole nation.
14.space(名词)太空；空间
搭配：space travel 航天旅行
-- as space science develops 随着太空科学的发展
-- take up too much space 占据太多空间
课文原句：How can I get information on space travel 如何获取有关太空旅行的信息
例题
--Could you tell me___C_____ the Space Museum
--Sure， next Monday.
A. when we visit
B. when will we visit
C. when we will visit.
15.none 一个都没有
辨析：both 两者全都--作主语 谓语动词用原型
--neither 两者都不
--none 三者或三者以上都不
--all 三者或三者以上 全都
-- She had almost none left=She had hardly any left 她几乎没有剩下什么了
例题
None of the shoes in the shop is the right size. They are __C____ too big _______ too small.
A. both; and
B. neither； nor
C. either ;or
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21世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
外研版八年级下册3单元知识点复习（原卷版）
1. communicate（动词）联系；交流
用法：communicate with sb 和某人交流；和某人联系
--communicate with letters 用信件交流
-- In the past ，most people communicated with letters 过去，大多数人用信件交流
--communication（名词）交流；联系
课文原句：Why has no one communicated with us 为什么没有人和我们联系？
例题（1）：
Teenagers have to find a ____ way to communicate with their parents.
A. fair
B. proper
C. strange
例题（2）：Parents often have trouble _______ with their kids, because they don’t understand each other.(communicate)
2. impossible（形容词）不可能的
用法：It’s impossible for sb to do sth 做某事对某人来说是不可能的
-- It’s impossible for human to live on the Mars in the near future, isn't it 在不久的将来，人类不可能生活在火星上，不是吗？
课文原句：It is impossible to imagine 这很难想象
例题（1）
I find _______ impossible to finish the work by Friday.
A. it’s
B. that
C. it
例题（2）Sarah found it impossible to c______ this task in a short time.
3. light（名词）光；光线
搭配：electric light 电灯
--turn on the light 开灯
--turn off the light 关灯
--the light turns green 交通灯变绿
-- The electric light is an electrical appliance. 电灯是一种电器。
课文原句：They are very far away and their light has to travel for many years to reach us. 它们离得很远，它们的光必须传播很多年才能到达我们。
例题（1）--Dad, can we walk _______ the road now
--No，we _______. We have to wait until the light turns green.
A. across；needn’t
B. across; can‘t
C. cross; mustn’t
例题（2）I used to make l_______ and light them on the Lantern Festival night.
4.discover（动词）找到；发现
用法: discover one's secret 发现某人的秘密
--discovery（名词）发现
--according to the discovery 根据发现
课文原句：Scientists have also discovered many other galaxies in the universe. 科学家还发现了宇宙中的许多其他星系。
例题（1）It’s important to master computer technology. So I advise you ________ new ways to make computers _______ us better.
A. discovering；serve
B. to discover；to serve
C. to discover；serve
例题（2）Such useful i_______ can help the police discover the truth faster and more correctly.
5.yet 还
用法：是现在完成时的标志 用于否定句或疑问句句末
-- I haven't washed my clothes yet 我还没洗衣服
课文原句：I haven’t started yet because I’m not sure how to make it. 我还没有开始，因为我不确定如何制作它。
例题（1）
Has the train ________ yet
A. arrived
B. reached
C. got
例题（2）The work is not c________ yet, so they have to keep on working at night.
6.just(副词)刚才；刚刚；仅仅
-- Dave couldn't help crying just now. 戴夫刚才忍不住哭了。
课文原句：I’ve just made a model spaceship for our school project. 我刚刚为我们的学校项目制作了一艘宇宙飞船模型。
例题
--Would you like _____ sugar in your coffee？
--Yes, but just _______.
A. any; little
B. some; a little
C. some ; little
7.reach（及物动词）到达；抵达
用法：reach sp 到达某地
-- reach the top of the mountain 到达山顶
-- reach every corner of the city 到达城市的每个角落
--reach an agreement 达成一致意见
例题（1）
The boy is _____ short _______ reach the apples on the tree.
A. so; that
B. enough； to
C. too； to
例题（2）When we reach the top of the mountain，we feel a sense of a________.
8.spaceship（名词）航天器；宇宙飞船
例句：Women's joining in spaceship is a necessary part of space exploration 女性加入宇宙飞船是太空探索的必要组成部分
课文原句：Scientists have sent a spaceship to Mars. 科学家向火星发送了一艘宇宙飞船。
例题（1）
--Do you know _________,Mary
--Yes. Perhaps in a few months.
A. why the spaceship returned
B. when will the spaceship return
C. when the spaceship will return
例题（2）My d________ is to take a spaceship to the moon.
9. group（名词）群；组
搭配：a group of… 一群…
课文原句：The sun and its planets are called the solar system，and our solar system is a small part of much larger group of stars and planets. 太阳和它的行星被称为太阳系，我们的太阳系是更大的恒星和行星群的一小部分。
例题
--How many students are there in each group？
--Usually each group _______ six students in our class.
A. is made from
B. is made up of
C. is made of
10. environment（名词）环境
搭配：protect the environment 保护环境
--improve the environment 改善环境
-- be friendly to environment 环境友好
课文原句：None of them has an environment like that of the earth，so scientists do not think they will find life on them. 它们都没有像地球那样的环境，所以科学家认为它们不会在上面找到生命。
例题
Peter thinks the environment in his hometown is _______ before. Both the air and the water are badly polluted.
A. much better than
B. not so good as
C. more worse than
11.latest（形容词）最近的；最新的
搭配：the latest news at home and abroad 国内外的最新消息
-- It is convenient for us to keep track of the latest news at home and abroad by using mobile phones 使用手机能方便的让我们掌握国内外的最新消息。
课文原句：Have you heard the latest news？ 你听到最新消息了吗？
例题：Next week, some i________ will interview Zhou Dongyu about her latest film.
12.universe（名词）宇宙
搭配：explore the universe 探索宇宙
例题
--In my opinion ，there must be life on other planets though none has been discovered.
--I can’t agree more. The universe is so large______ .
A. after all
B. at all
C. all in all
13.astronaut（可数名词）宇航员
课文原句：Are there any astronauts in the spaceship 飞船上有宇航员吗？
例题：Wang Yaping. China’s first female astronaut to conduct a spacewalk, is ______(认为) as the pride of the whole nation.
14.space(名词)太空；空间
搭配：space travel 航天旅行
-- as space science develops 随着太空科学的发展
-- take up too much space 占据太多空间
课文原句：How can I get information on space travel 如何获取有关太空旅行的信息
例题
--Could you tell me_______ the Space Museum
--Sure， next Monday.
A. when we visit
B. when will we visit
C. when we will visit.
15.none 一个都没有
辨析：both 两者全都--作主语 谓语动词用原型
--neither 两者都不
--none 三者或三者以上都不
--all 三者或三者以上 全都
-- She had almost none left=She had hardly any left 她几乎没有剩下什么了
例题
None of the shoes in the shop is the right size. They are ____ too big _______ too small.
A. both; and
B. neither； nor
C. either ;or
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