Unit 13 We're trying to save the earth! Section B Self-check 课件

(共28张PPT)
They are playing the video games.
She is listening to music.
What is / are … doing
The cat is fishing.
The dog is sleeping.
What a clean blackboard! Who cleaned it
It was cleaned by …
Who cooked such delicious meal
It was cooked by …
Who broke the glass
It was broken by …
Sam __________ sick for two days.
Look and say
has been
Arnold __________ basketball since January.
has played
Maggie _________ in Nice for about 19 years.
has lived
Practice
Work in pairs and talk about possible rules for visitors to the forests, using must, mustn’t, should, shouldn’t.
eg: Don’t walk on the lawn (草坪).
You should take care of the lawn.
…
时态 现在进行时
用法 表示现在或现阶段正在进行或发生的动作。
构成
方式 be(am / is / are) + 动词的现在分词
现在完成时
表示过去发生或者未发生的事对现在造成的影响或结果。
主语 + have / has + 过去分词 + …
时态 主动语态 被动语态
一般现在时 do / does am / is / are + done
一般过去时 did was / were + done
一般将来时
will / be going to + do will / be going to + be + done
分类 特点 例词 意义 例句
情态动词 跟动词原形（有自己的词汇意思） can (could), may (might),
should, ought to, must, need, have to, etc. 不能独立做谓语。表示说话人语气、情感或态度，无人称和数的变化(have to除外) We can’t carry the heavy box.
He may come tomorrow.
We must study hard.
定义
used to “过去常常”，表过去的习惯
用法：used to + 动词原形
句式
否定句：
didn’t use to … / used not to …
一般疑问句:
Did you use to... / Used you to …
变反意疑问句，附加疑问部分可用 didn’t / usedn’t 或did / used
Jenny used to play the piano.
用used to句型说出与图片情景相符的句子。
Jenny
Mike used to wear glasses.
Mike, glasses
Peter used to play soccer.
Peter, soccer
Amy, long hair
Amy used to have long hair.
Mark used to like swimming.
Mark, like swim
Write different forms of the words. Then add more to each group.
1
v. – n. n. – adj.
pollute – fame –
act – wood –
protect – science –
inspire – health –
build – south –
create – care –
pollution
action
protection
inspiration
building
creativity
famous
wooden
scientific
healthy
southern
careful
adj. – n. adj. – adv.
different – slow–
important – wide –
sudden –
real –
difference
importance
slowly
widely
suddenly
really
Match each statement with the grammar structure.
2
Statement
The river used to be so clean.
We have seen many changes in the environment.
People should take public transportation more.
The river is polluted by factories.
The air pollution is getting worse and worse.
Grammar
Present progressive
Model verbs
Passive voice
used to
Present perfect
Write ways to cut down on these kinds of pollution.
3
Kinds of pollution Ways to cut down
water pollution
land pollution
ask factories not to throw waste into the rivers; remind people not to litter
ensure that factories throw away industrial waste in a responsible way; try not to use plastic bags when shopping
Kinds of pollution Ways to cut down
noise pollution
air pollution
build airports away from places where people live
encourage people to use public transportation instead of driving; reduce the number of factories that burn coal
1. Listen! The phone __________ (ring). Please go to answer it.
2. — Alan, it’s late. Why not go to bed
— Jenny hasn’t come back yet. I
___________ (wait) for her.
3. — What’s your father doing now
— He _________ (write) a letter in the study.
is ringing
am waiting
is writing
一、用括号内所给动词的适当形式填空。
4. — I’d like to introduce my best friend to
you, Peter.
— Thank you, Lucy. But we ________
(meet) already.
5. — Look at these stamps. I __________
(keep) them for five years.
— Wow, they are wonderful.
have met
have kept
6. The Secondary School Entrance Exams _______ (hold) in June.
7. A strange noise __________ (hear) by his mother last night.
8. A wide road _____________ (build) between the two villages by those people next year.
is held
was heard
will be built
1. They are having lunch now. (对划线提问)
What are they doing now
2. 三班的学生正在做作业。 （汉译英）
The students of Class Three _____ _____
their homework.
are doing
二、按要求完成句子。
3. What are you doing now (go to school)
(用所给词组回答)
I am going to school now.
4. Lucy is talking to Lily. (对划线提问)
Who is talking to Lily
5. 他们正在游泳。（汉译英）
They are swimming.
6. We call the girl Lucy. (改为被动语态的一般疑问句)
______ the girl _____ Lucy by you
7. The boy is looked after by his grandparents.
(改为否定句)
The boy _______ ________after by his
grandparents.
8. English and Japanese are spoken in Japan.
(对划线部分提问)
______ ___________ are spoken in Japan
Is
called
isn’t looked
What
languages
9. The teacher makes his students carry water.
(改为被动语态)
His students ______ made _______ carry
water by the teacher.
10. He plants many trees every year. (改为被
动语态)
Many trees ______ planted by ______
every year.
are
to
are
him