Unit4Grammar-九年级英语下册课件(共27张PPT)

(共27张PPT)
九下Unit4 Grammar
3月20日下午第2节九年级英语
1.第一次乘坐飞机 _________
2.在……岁时 __________
3.因为低重力____________________
4.围绕太阳转 _______________
5.提醒某人某事________________
6. 知道（意识到） _____________________
7.穿特殊的靴子______________________
8. 背上背着氧气罐 ______________________
9.同意 … ___________________
10.与……类似_______________________
11.建造室内操场 __________________
12.与……不同___________________
take the first flight
at the age of
because of the low gravity
circle around the Sun
remind sb of sth
be aware of
wear special boots
carry air tanks on the backs
be in agreement that...
be similar to...
build indoor playgrounds
be different from...
课前预习作业：
简单句（simple sentences）：只有一个主语（或并列主语）和一个谓语（或并列谓语）
复合句：表面上是一个句子，实际上里面含有一个或一个以上从句的句子。复合句包含：名词性从句（主语从句、宾语从句、表语从句和同位语从句）、定语从句和状语从句等。
Using adverbial clauses or simple sentences
状语从句和简单句之间的转换
状语从句：用来修饰主句中的动词，副词和形容词的从句。
根据其含义，状语从句可分为：
时间状语从句 地点状语从句
条件状语从句 原因状语从句
结果状语从句 比较状语从句
目的状语从句 让步状语从句
Look at the following sentences.
Neil Armstrong received his student pilot’s licence when he was 16.
Neil Armstrong received his student pilot’s licence
at the age of 16.
时间状语从句
时间状语从句可借助介词短语转化为简单句。
介词短语
2. People might float in space because the gravity is low.
People might float in space because of the low gravity.
because引导的原因状语从句用短语because of可转换成简单句。
原因状语从句
介词短语
float 漂浮
gravity 重力
because+句子=because of+名词短语
3. Humans cannot survive if there is no food, water or oxygen.
Humans cannot survive without food, water or oxygen.
if not引导的条件状语从句可借助without短语转化为简单句。
条件状语从句
介词短语
oxygen氧气
Rewrite the sentences on P56.
1. Yuri Gagarin became the first man to go into outer space at the age of 27. (when)
2. People might move to another planet in the future because the population on the Earth is increasing rapidly. (because of)
People might move to another planet in the future because of the rapidly increasing population on the Earth.
Yuri Gagarin became the first man to go into outer space when he was 27.
3. If there is no fresh food, meals will not be as tasty as they are today. (without)
Without fresh food, meals will not be as tasty as they are today.
4. It would be funny to play football on Mars because of the low gravity. (because)
It would be funny to play football on Mars because the gravity is low.
5. Without special boots, you cannot walk on Mars. (if…not)
If there is no special boots, you cannot walk on Mars.
1 她七岁开始学画画。
She started to learn drawing when she was seven.
She started to learn drawing at the age of seven.
2 因为他有太多的家庭作业，他不能去聚会。
He could not go to the party because he had too much homework.
He could not go to the party because of too much homework.
3 如果没有帮助，他无法解决这个问题。
He cannot solve this problem if he has no help.
He cannot solve this problem without help.
Rewrite the sentences into simple sentences.
Exercise
Ready
go
Using object clauses or simple sentences
宾语从句和简单句之间的转换
什么叫宾语从句（object clauses）？
S+V+O 主谓宾
I like English. 这里English就是充当宾语。有时候我们需要用一个从句来充当宾语，譬如：I think （that）she is clever.这里she is clever就是充当宾语成分。
Look at the following sentences.
The smell of the pills reminds them that food on the Earth is tasty.
The smell of the pills reminds them
of the tasty food on the Earth.
宾语从句
介词短语
2. Are they sure that space travel will be very fast
Are they sure about the fast speed of space travel
我们可以用介词把宾语从句转换为简单句。
常用的一些动词和介词的搭配有：
remind sb. of…. 使某人想起……
be sure/certain about … 对……确信
宾语从句
介词短语
1. 你确信汤姆对这计划满意吗？
Are you certain that Tom is satisfied with the plan
Are you certain about Tom’s satisfaction with the plan
2. 这些照片让我想起我已经去过英国旅游。
The photos remind me that I have travelled to the UK.
The photos remind me of my trip to the UK.
3. 我确信这场音乐会的门票会很贵。
I am sure that the concert tickets will be expensive.
I am sure about the high price for the concert tickets.
Exercise
Ready
go
Read the dialogue and complete the exercises on page 57.
aware 知识，意识到
circle 围绕，将...圈起来
agreement一致，同意
1. Are you aware __________________________ __________ (distance)
2. Do scientists agree _______________________ _____________________________(possibility)
3. Have they thought _______________________ ___________________(problem)
4. Are you aware __________________________ (transport)
5. I wonder _______________________________ _______________(number)
6. I think people should know _______________ _________________________________________ (differences).
of the distance between Mars and the sun___
on the possibility of humans
living on Mars in the future
about the problem of low
gravity on Mars
the number of people liking to
of Martian transport
move to Mars
the differences between living on Mars and living on the earth
distance距离，远处
possibility可能性
P57
Using defining relative clauses or simple sentences
定语从句和简单句之间的转换
什么是定语从句（defining relative clauses）？
在复合句中,修饰某一名词或代词的从句叫定语从句。引导定语从句的词叫关系词。被定语从句所修饰的名词或代词叫先行词。
He is the man　who　I want to see. 他就是我想要见的那个人。
　 先行词 关系词　 定语从句
Look at the following sentences.
People might live in houses which have huge comfortable rooms.
People might live in houses with huge comfortable rooms.
定语从句
介词短语
2. On Mars you might see people
who wear special boots.
On Mars you might see people
in special boots.
我们可以用介词把定语从句转换为简单句。
定语从句
介词短语
P58 C1
in
with
with
with
with
in
with
with
P58 C2
Dear aliens,
Humans are thinking about moving to another planet because the
pollution on the Earth is very serious. Many people do not doubt
that life on Mars would be very interesting, but I am not sure. We
could not play football on Mars because of the low gravity.
Life would be boring for me if I could not play football. Maybe this
problem could be solved by building indoor playgrounds which have
the same football fields as those on the Earth.
By the way, would strangers be welcome I hope to hear from you soon. Simon
__________
_______________________________
________________________
____________________
________________________________________
because of the serious pollution on the Earth
about the interesting life on Mars
because the gravity is low
without football
with the same football fields as those on the Earth
__________
alien 外星人
stranger外来者，陌生人
_______________________________
那位身着蓝色衬衫的男士是我们的英语老师。
The man who wears a blue shirt is our English teacher.
The man in a blue shirt is our English teacher.
4. 你认识那个手里正拿着两本书的女孩吗？
Do you know the girl who is holding two books in her hand
Do you know the girl with two books in her hand
我更想住在一间海景房。
I prefer to stay in a hotel room which has a sea view.
I prefer to stay in a hotel room with a sea view.
Exercise
Ready
go
同学们，这节课我们就上到这儿。接下来请大家完成课堂作业。请仔细审题，认真思考，工整书写，规范答题，提高准确率，充分展示这一节课的学习收获吧！