【单元一遍过】Unit 4 Amazing Science复习课件(共40张PPT)

(共40张PPT)
仁爱九年级上册
Unit 4 Amazing Science
目录页
1、单击此处添加标题
2、单击此处添加标题
3、单击此处添加标题
4、单击此处添加标题
5、单击此处添加标题
Learning aims
1.Review the key words, phrases and sentence patterns.
2. Review this unit knowledge and key grammar.
3. Master the topic writing in this unit
Unit4 Amazing Science
温习梳理教材
词汇拓展
invent
think
description
doubt
certainly
wonder
wonderful
proved
bad/badly
fifths
whom
whose
二、重点词组短语 Topic1
1．允许某人做某事_____________________.
2．花时间做某事____________________
3．把……出示给…… ________________
4．由……制成___________________
5．用来做……___________________
6．进入太空______________________
allow sb.to do sth
spend...in doing sth./ on sth.
show...to...
be made of/from
be used for doing/ to do
go into space
7．实现__________________
8．把……送入…… ________________
9．发生_________________
10．嘲笑__________________
11．在任何时候_______________
12．剩下的时间_____________________
come true
send...into...
come about
laugh at
at any time
the rest of the time
Unit4 Topic2
1．在太空______________
2．火星上______________
3．在外层空间，外太空______________
4．以……命名_______________
5．相隔____________________
6．被……覆盖__________________
in space
on Mars
in outer space
name after
at a distance of
be covered by
7．登上火星_________________
8．进展顺利_____________________
9．淋浴________________________
10．值得做某事___________________
11．搜寻
12．因某事/物佩服某人
land on Mars
go well
have a shower
be worth doing
search for
admire sb.for sth.
Unit4 Topic3
1．走进太空旅行____________________
2．在过去的几年里___________________
3．实现你的梦想______________________
4．例如_______________________
5．肯定，确定____________________
travel into space
in the past few years
realize/ achieve your dream
for instance/for example
for certain
6．独自地，独立地____________________
7．做家务_____________________
8．警告某人不要做某事._______________________
9．在……的帮助下__________________________
10．下定决心做某事_____________________.
11．让某人持续做某事______________________
on one’s own
do the housework
warn sb.not to do sth
with the help of/with one’s help
make up one’s mind to do sth
keep sb.doingsth.
12．下订单和取消订单__________________
13．对……感到惊讶_____________________
14．保持安静_________________
15．颐和园__________________
16．一束花___________________
place and cancel orders
be surprised at
keep silent
the Summer Palace
a bunch of flowers
情景交际
三、知识点解析
1．I was not allowed to play computer games last night.
昨天晚上我不被允许玩电脑游戏。
be(not) allowed to do sth.(不)被允许做某事
上高中时我不被允许10点以后还不回家。
I was not allowed to stay out past ten when I was in high school.
3．It’s said that he invented more than two thousand things during his life.
据说他一生中发明了两千多件东西。
It’s said that...据说……
据说他将去国外学习。
It’s said that he will study abroad.
It is said (reported) that ...
该句型中的 it 仍是形式主语，真正主语是 that 引导的主语从句。
知识点解析
重点知识点讲解
4.1.Who will take part in the space flight 谁会参加这次飞行？
take part in 参加会议或群众性活动等，着重说明主语参加该活动并在活动中发挥作用。
We often take part in physical labor.
join 参加某一组织团体、党派，成为其中一员，或和某人一起做事情。
When did your brother join the army
He’ll join us in singing the song.
join in 多指参加小规模的活动，如“球赛、游戏”等。 常用于日常口语。
Come along , and join in the ball games.
5. Its diameter is 53% as wide as that of the
earth.它的直径是地球直径的53%。
6 . The gravity on the surface of Mars is about
two-fifths as strong as it is on earth.火星表面
的引力大约是地球引力的五分之二。
倍数(分数)+ as +adj.+as ……的几倍
7. Mars goes around the sun at a distance of
about 228 million kilometers.火星在距太阳约
228 000 000千米处环绕着太阳转。
at a distance of …有 ……距离
8．So a person who weighs 90 kilos on earth weighs only 36 kilos on Mars.
所以一个在地球上重90公斤的人在火星上只有36公斤重。
weigh v．称；称……的重量
它们重大约1,000磅。
They weigh about 1,000 pounds.
知识点解析
知识点解析
9．It has been two days since we landed on Mars.
自从我们登上火星已经有两天了。
自……以来多长时间了
It has been＋一段时间＋since 从句
我们开业已有三年时间了。
It’s been three years since we started business.
It has been＋一段时间＋since ＋ 从句，经常写成It is＋一段时间＋since＋从句
知识点解析
10．So I advise you to discover new ways to make computers serve us better.
所以我建议你去探索新方法使电脑更好地服务我们。
advise sb.(not) to do sth.建议某人(不)做某事
(1)advise “建议”，是动词，常见结构有advise sb.to do (＋that从句)；
(2)advice “建议”，是不可数名词，suggestion “建议”，是可数名词。
知识点解析
11．There is no doubt that computers are very useful in technology and business.
毫无疑问，电脑在科技与商业领域都是非常有用的。
no doubt无疑地
毫无疑问，他一定会成功。
There is no doubt of his success.
(1)doubt＋whether/if从句，“对某事是否……有疑问”，用于肯定句，其中if从句显得更随便；
(2)doubt＋that从句，“对……一事有怀疑”，通常用于否定句、疑问句。
知识点解析
12．The scientist also warns that if we are lucky，they might treat us as we now treat our pets.
科学家也警告，如果我们幸运，也许他们对待我们会像我们现在对待我们的宠物一样。
warn v．警告，告诫
我设法提醒过他，可他就是不听。
I tried to warn him, but he wouldn’t listen.
知识点解析
(1)warn sb.(not) to do sth.告诫某人(不)做某事；
(2)warn sb.off (sth.) (尤指以威胁的方式)叫……离开，告诫……不要靠近。
The doctor warned me against drinking.(同义替换)
The doctor warned me not to drink.
知识点解析
一般过去时态的被动语态
【要点1】　一般过去时态的被动语态的构成：was/were＋动词过去分词。如：
The light bulb was invented by Thomas Edison in 1879．
The new cars were made in Shanghai in 2008．
【要点2】　通常只有及物动词才有被动语态，但有些动词短语在用法上相当于及物动词，所以也有被动语态。如：
The old man was looked after well.
The doctor has been sent for.
一般将来时的被动语态及含有情态动词的被动语态
【要点1】　一般将来时的被动语态的一般构成：will be＋动词的过去分词。如：
Li Ming will be asked to attend the lecture.
The bridge will be built next year.
【要点2】　含有情态动词的被动语态的结构：情态动词＋be＋动词的过去分词。如：
The books may be kept for two weeks by you.
Your camera can’t be taken into the museum.
【要点3】　如果主动句中的宾语补足语是不带to的不定式，那么，在其变成被动句中的主语补足语时，to不能省略。如：
She heard him sing a song just now.→
He was heard to sing a song just now.
定语从句(一)
【要点1】　了解定语从句的几个概念：在复合句中修饰名词或代词、起定语作用的从句叫作定语从句。定语从句只作为句子的一个成分，起修饰和说明的作用，不能独立存在。被定语从句修饰的名词或代词叫作先行词。先行词一般出现在定语从句的前面。
定语从句由关系词引导，关系词一般有3个作用：
(1)连接作用，引导定语从句；
(2)代替先行词；
(3)在定语从句中充当某一成分。
He is the man (whom/that) I saw yesterday.
(man 为先行词；whom/that为关系代词，在从句中作宾语)
关系词 先行词 在从句中成分
________ 人 主语，宾语
which _______ 主语，宾语
that 物 ，人 ___________
Who
物
主语，宾语
定语从句结构：先行词+关系词+定语从句
( )1. ---These bananas look different and they are sweet.
---Right. They ____ here from Taiwan yesterday.
A. was brought B. were brought C. bring D. are brought
( )2. ---Mom, may I go out to play football this afternoon
---You can, if your homework _____.
A. is finished B. will finish C. has finished D. will be finished
( )3. A talk on development in science _____ next week.
A. is given B. was given C. has given D. will be given
( )4. This kind of desk ____ of wood.
A. is making B. made C. is made D. makes
( )5. The doctor looked over Peter carefully after he _____
to the hospital .
A. takes B. is taken C. took D. was taken
Exercises
B
A
D
C
D
( ) 1.The number of people ____ lost their lives in
Indonesian earthquake reached as many as 6200.
A. which B. who C. Whom
( ) 2.---Have you been to the new Sports Center
_____ is just opened in town
---No, not yet.
A. where B. who C. that
( ) 3.This is a new museum ______ was built
last year.
A. when B. who C. which
( ) 4.Do you know the girl _____ is singing on
the stage
A. who B. what C. which
Review
B
C
C
A
话题写作：