(共20张PPT)
Unit 4
Save the trees
关键词汇:
1. 在很多方面 __________________________
2. 使空气保持清新________________________
3. 吸收;吸入 ________________
4. 有毒气体 ____________________
5. 产生氧气 ____________________
6. 空气污染 _____________________
7. 日常生活 ___________________________
8. 事实上_____________
9. 树的树叶 ____________________________
in many ways
keep the air cool and clean
take in
harmful gases
produce oxygen
air pollution
daily lives
in fact
the leaves of trees
关键词汇:
1. 环顾四周 __________________________
2. 砍倒;砍伐________________________
3. 数以百万计的 ________________________
4. 停止做这件事情 ______________________
look around
cut down
millions of
stop doing this thing
一、根据教材P45的课文内容,补全下面短文,每空一词
Rebecca is 1. __________ Dr Jones about trees. She learns that trees help us in many ways. They 2.______ the air cool and clean. They ________ harmful gases from the air and 3. _________ oxygen for us 4.__________ .
In fact , many of the things in our daily lives 5._________ trees. For example, paper, pencils, fruit and oil. Tea also comes from the 6. _____ of trees. Trees really make our lives more 7. __________ . We can’t 8. _______ a world without trees. We should stop 9.________ down 10. _______ of trees every year.
millions
interviewing
keep
produce
to breathe
leaves
convenient
imagine
cutting
take in
come from
重点语法—现在进行时
其结构 是“be(am,is,are)+动词的-ing形式”。
1.表示正在进行的动作,常和now, right now,at this moment等时间状语及动词look, listen等连用。
eg. Look! She is cleaning the room now.
2.表示目前一段时间内一直发生的动作,但是说话时不一定正在发生,常和these days, this week, at present等时间状语连用。
eg. They are working on the farm these days.
动词的-ing形式
主要动词 -ing形式 例子
大多数动词 加-ing feel--feeling
以-e结尾的动词 去e ,加ing write--writing
以-ie结尾的动词 去ie,加-ying lie-- lying
一些以一个元音字母+一个辅音字母结尾的动词 双写这个辅音字母,加-ing run--running
现在进行时句型
肯定句:主语+ be+V-ing+其它
She is swimming in the sea.
否定句:在be动词后加not
She is not swimming in the sea.
一般疑问句:把be动词提前
Is she swimming in the sea
What is she doing in the sea
Where is she swimming
特殊疑问句:特殊疑问词+一般疑问句
变否定句
My dad is fishing now.
My dad isn’t fishing now.
They are eating some hot dogs.
They are not eating
any hot dogs.
变否定句
变一般疑问句
Tom is playing basketball now.
Is Tom playing basketball now
现在进行时的特殊用法:
D.有些动词(状态动词不用于进行时态)
4. 表示拥有的动词want, belong to(属于)
1.表示知道或了解的动词:
believe, know, understand
2. 表示喜爱或不喜爱hate, like, love, prefer
3.表示感官的动词 see smell sound taste
用括号中动词的适当形式填空:
1. My parents __________(watch) TV now.
2. Look. Three boys __________(run).
3. What ____ your mother ______ (do) now
4. Are your dog _________ now (sleep)
5. - _______ you __________ (listen) to music
- Yes, I am.
Exercise
are watching
are running
is
doing
sleeping
Are
listening
用括号中动词的适当形式填空:
6. Look, Miss Chen __________ football.(play)
7. Tom and his sister __________ (wait) for you over there.
8. Now Class 3 and Class 4 __________ (have) a test.
9. Listen, someone __________ (sing) in the classroom.
is playing
are waiting
are having
is singing
Correct the mistakes (改错)
Look! Simon and I having a birthday party. There are many friends at our party. Lucy and Lily is siting on the floor. They are play with Mary. Some of my friends is singing and danceing.
________
are having
_________
are sitting
_____
playing
__
are
___________
dancing
1. Where's Tom His mother ________him now.【2011北京】
A. is looking for B. will look for
C. has looked for D. looks for
2. - What is Tom doing now
- He ______ basketball over there.【2011山东】
A. is playing B. will play
C. has played D. was playing
中考链接
3. - What’s the weather like 【2011辽宁大连】
- Oh, it ___ outside. take an umbrella with you.
A. rains B. is raining
C. was raining D. rained
4. You can’t use the bathroom right now. Robbie ______ a shower.【2011湖南张家界】
A. takes B. will take C. is taking
中考链接
5. Look! The boys _______ football on the playground. 【2011广西桂林】
A. plays B. play C. are playing D. played
6. Don't make so much noise. The children _______an English lesson.【2011黑龙江绥化市】
A. have B. are having C. were having D. had
中考链接
中考链接
9. - Where is Michael
- He ____TV at home, I think.【2011广西崇左】
A. watches B. watched
C. is watching D. was watching
10. Listen! The phone ___. Please go to answer it.【2011辽宁沈阳】
A. rings B. is ringing
C. rang D. will ring
一、选择填空
( )1. Listen!She _____ in the next room.
A. sings B. will sing C. is singing
( )2. The picture on the wall _____ very beautiful.
A. is looking B. looks C. is looked
( )3. The Whites _____ supper at home now.
A. have B. is having C. are having
C
B
C
( )4. It _____ hard outside now.
A. is raining B. rains C. is rainy
( )5. Tom _____ for America tomorrow.
A. leaves B. left C. is leaving
( )6. There are some birds _____ in the sky.
A. are flying B. flying C. fly
A
C
B