Unit 4 Life on Mars Grammar课件(共24张PPT) 2023-2024学年牛津译林版英语九年级下册

(共24张PPT)
译林版
初中英语 译林版九年级下册
Unit 4
Period 3
Grammar
新课导入
Free Talk
1. We have learned some ways to rewrite some complex clauses into some simple sentences Can you say them out
2. Can you think of other ways to rewrite complex clauses into
simple sentences
1
2
能熟悉并能正确运用本课时的重点单词和短语。
能掌握用介词短语把状语从句转换成简单句。
3
能掌握用介词把宾语从句转换成简单句。
4
能掌握用介词把定语从句转换成简单句。
1. —Did you have a sports meeting yesterday
—No, we didn't. It was put off __________ the heavy rain.
A.instead of B.because of C.as for D.rather than
2. The man __________ is my father.
A. in wearing a white shirt B. on a white shirt
C. wears a white shirt D. who wears a white shirt
预习检测
B
D
3. She started to learn English __________ she was five.
A. at B. when C. that D. about
4. Nobody knows he has left because he went away __________ saying
goodbye to anyone.
A. without B. with C. for D. from
5. —Do you know the young girl __________ an umbrella in her right hand
—Oh, she is my cousin Jenny.
A. who hold B. which holds C. she is holding D. with
B
A
D
知识梳理
Language Points
1. Are scientists in agreement that living on Mars would be
possible for humans in the future
科学家们是否一致认为人类将来可能生活在火星上？
in agreement 同意；一致
e.g. I'm glad we are in agreement about one thing, at least.
我很高兴我们至少能就一件事达成共识。
用介词短语把状语从句转换成简单句
1. 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
2. People might float in space because the gravity is low.
People might float in space _____________________.
because of the low gravity
3. Humans cannot survive if there is no food, water or oxygen.
Humans cannot survive ____________________________.
without food, water or oxygen
We can rewrite some adverbial clauses in simple sentences with prepositional phrases beginning with at the age of, because of and without.
介宾短语替代状语从句将复合句改为简单句
Can you use another sentences to rewrite these sentences
What rule can you work out
一些when引导的时间状语从句可借助介词短语at the age of转化为简单句。
because引导的原因状语从句用介词短语because of可转换成简单句。
if not引导的条件状语从句可借助without短语转化为简单句。
注意：转换时要注意时态和意思的一致性和准确性。
Daniel is writing about visiting another planet. Help him rewrite the sentences using the words in brackets.
1. Neil Armstrong took his first flight when he was only six. (at the age of)
__________________________________________________________
2. Yuri Gagarin became the first man to go into outer space at the age of 27.
(when)
__________________________________________________________
Neil Armstrong took his first flight at the age of six.
Yuri Gagarin became the first man to go into outer space when he was 27.
3. People might move to another planet in the future because the population on the Earth is increasing rapidly. (because of)
___________________________________________________________
___________________________________________________________
4. If there is no fresh food, meals will not be as tasty as they are today. (without)
___________________________________________________________
5. It would be funny to play football on Mars because of the low gravity. (because)
___________________________________________________________
6. Without special boots, you cannot walk on Mars. (if … not )
___________________________________________________________
People might move to another planet in the future because of the rapid increase in population on the Earth.
Without fresh food, meals will not be as tasty as they are today.
It would be funny to play football on Mars because the gravity is low.
If you do not wear special boots, you cannot walk on Mars.
通过以
活动小结
通过以上的活动，我们学习了用介词短语把状语从句转换成简单句：
我们可以用介词短语____________、_____________
和without等将状语从句转换成简单句。
because of
at the age of
探究二
用介词把宾语从句转换成简单句
1. 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
2. Are they sure that space travel will be very fast
Are they sure ____________________________
about the fast speed of space travel
We can rewrite some object clauses in simple sentences with prepositions like of and about.
介词转化宾语从句将复合句改为简单句
Can you use another sentences to rewrite these sentences
What rule can you work out
注意：常用的一些动词和介词的搭配有：
remind somebody of ... 使某人想起……
be sure/certain about ... 对……确信
Millie knows little about the planet Mars. She is asking Daniel for more information. Rewrite Millie's sentences using the words in brackets.
Millie: (1) Are you aware how far Mars is away from the Sun
Daniel: Yes. Mars is about 142,000,000 miles away from the Sun. It takes
Mars about two Earth years to circle around the Sun once.
Millie: (2) Are scientists in agreement that living on Mars would be possible
for humans in the future
Daniel: No. But they're working hard to learn more about Mars.
Millie: (3) Do they think that the low gravity on Mars might be a problem
Daniel: Yes, they do.
Millie: (4) Are you aware that transport could be like on Mars
Daniel: It could be much better than that on the Earth. However, scientists
aren't sure whether people could grow plants on Mars.
Millie: (5) I wonder how many people would like to move to Mars.
(6) I think people should know that life on Mars would be different
from that on the Earth.
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 willing to move to Mars
of the transport on Mars
the differences between life on Mars and
that on the Earth
活动小结
通过以上的活动，我们学习了用介词把宾语从句转换成简单句：
我们可以用介词________、_________等将宾语从句转换成简单句。
of
about
探究三
用介词把定语从句转换成简单句
1. People might live in houses which have huge comfortable rooms.
People might live in houses _____________________________.
with huge comfortable rooms
2. On Mars you might see people who wear special boots.
On Mars you might see people __________________.
in special boots
We can rewrite some defining relative clauses in simple sentences with prepositions like with and in.
介词转化定语从句将复合句改为简单句
Can you use another sentences to rewrite these sentences
What rule can you work out
Simon is writing about Mars. Rewrite the defining relative clauses in simple sentences with preposition with or in.
1. Mars is a planet that has an environment similar to that of the Earth.
____________________________________________________________
2. Astronauts who wear space suits and helmets might stay on Mars for hours.
____________________________________________________________
3. It is difficult to breathe on a planet that has much thinner air than that on
the Earth.
____________________________________________________________
____________________________________________________________
4. On Mars there might be people who carry air tanks on their backs.
____________________________________________________________
Mars is a planet with an environment similar to that of the Earth.
Astronauts in space suits and helmets might stay on Mars for hours.
It is difficult to breathe on a planet with much thinner air than that on the Earth.
On Mars there might be people with air tanks on their backs.
活动小结
通过以上的活动，我们学习了用介词把定语从句转换成简单句：
我们可以用介词_________、________等将定语从句转换成简单句。
with
in
Simon is interested in stories about aliens. He even writes to aliens. Replace each of the underlined parts in his letter with another expression.
Dear aliens,
Humans are thinking about moving to another planet (1) because the pollution on the Earth is very serious. Many people do not doubt (2) that life on Mars would be very interesting, but I am not sure. We could not play football on Mars (3) because of the low gravity. Life would be boring for me (4) if I could not play football. Maybe this problem could be solved by building indoor playgrounds (5) 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 very serious pollution on the Earth.
about the interesting life on Mars.
because the gravity is low.
without playing football.
with the same football fields as those on the Earth.
当堂检测
将下列复合句改成简单句。
1. The girl who wears a hat is Lucy King.
__________________________________________________
2. He was absent from school because he was ill.
__________________________________________________
3. The old man was in good health when he was 90.
__________________________________________________
4. If you don't support us, we won't win the Maths competition.
__________________________________________________
5. The sight of the clock reminded me that I was late.
__________________________________________________
The girl in a hat is Lucy King.
He was absent from school because of his illness.
The old man was in good health at the age of 90.
Without your support, we won't win the Maths competition.
The sight of the clock reminded me of my lateness.
重点单词和短语：
aware, circle, agreement,
distance, possibility, alien, stranger, in agreement
Unit 4
Period 3
简单句和复合句之间的转换（二）:
我们可以用介词短语____________________
和without等将状语从句转换成简单句；
我们可以用介词_________________等将宾语从句转换成简单句；
我们可以用介词_________________等将定语从句转换成简单句。
at the age of, because of
of, about
with, in