中考英语二轮语法复习课件-专题9 情态动词

(共27张PPT)
情态动词
Modal verbs
Modal verbs
情态动词
1. 概念及特征
1. He can speak English well.
2. Tom may not fail in the exam if he studies hard.
3. She has to do her homework.
4. -- May I come in -- Yes, you may/ can.
5. What can I do for you
概念及特征
表示能力、怀疑、允诺、愿望、义务、必要、猜测等。
后加 动词 ____。
除______外, 无人称和数的变化。
具有助动词的作用。
have to
原形
1. The little boy _____ speak English well in the past, and
he ____ do it better now because of his hard work.
2. This _____ be done in such a short time.
3. How ____ it be true
4. ________ I borrow your English book
can, could
could
常见情态动词的用法
can’t
Can/ Could
can
can
能力，could为过去式
推测，can’t不可能，否定句
推测，用于疑问句
请求或许可，could更加委婉
5. They ______ be watching TV now. I am not sure about it.
6. --Staying at home makes a difference to all of us now.
--I __________ agree more.
7. When listening to the crosstalk, we ____ help laughing.
can, could
could
常见情态动词的用法
can’t/ couldn’t
can’t
固定搭配
推测
1. You ____ sit here if you want.
2. She _________ be back tomorrow, but I’m not sure.
3. ____ you succeed.
4. He asked if he _____ go home.
may, might
may
may/ might
May
might
Maybe she will be back tomorrow.
could
推测，
“可能”
请求或许可，
“可以”
祝愿
请求或许可，
may的过去式
5. -- _________ I smoke here
--Yes, you ____.
6. –-You look very pretty. If I ____ say so.
--Thanks a lot for saying that.
may, might
May/ Might
Yes, you can.
No, you mustn’t/ can’t/ had better not.
may
Can/ Could
may
请求或许可，
might更委婉
口语，礼貌
must, have to
1. -- _____ I finish my homework
--Yes, you _____.
--No, you __________.
2. Children ______ play with fire.
3. The book _____ be Mary’s because her name is on the
cover.
Must
No, you needn’t /don’t need to.
must
mustn’t
don’t have to
must
主观看法
禁止
有把握的推测
must, have to
4. -- Does he ______ stay indoors to stop the spread of the
new coronavirus
-- Yes, he does.
5. He ______ hand in the homework by five o’clock
yesterday.
have to
had to
客观看法
有人称、时态的变化
shall, should, had better
_____ we go for a walk
We ______ protect the environment.
We ______ go now because it is going to rain.
Shall
should
should
had better
提建议，
用于第一人称
要求、命令、警告、建议(语气比had better强)
had better：
1. 最好
2. 加动词原形
3. ‘d better
will, would
1. I ____do my homework this afternoon.
2. I ____ do that again.
3. Jerry didn’t pay me back, but he promised that he _____
this Sunday.
4. __________ you pass me the ball, please
5. ______ you like something to drink
6. Oil and water ____ not mix together.
will
won’t
would
Will/ Would
Would
will
构成将来时态
意志、愿望和决心
will的过去式，过去将来时
请求，在疑问句中，would更委婉
would like,语气委婉
客观事实
1. You ______ say sorry to him because it is not your fault.
2. -- _____ I answer the question
--No, you ______.
3. She __________ to see the doctor. She just needs a
rest.
4. He ______ me to help him with the cooking.
5. The flower ______ watering.
6. A friend in ____ is a friend indeed.
need
need
-- Yes, you must/ have to.
needn’t
= The flower needs to be watered.
need/ want/ require doing sth.
=to be done
Need
needn’t
doesn’t need
needed
needs
情态动词,
用于否定句和疑问句。
实义动词, 后接名词, 代词, doing, 和 to do。
名词
dare
1. ____ he tell them what he knows
2. I ______ ask her—will you do it for me
3. If we _____ not go there that day, we couldn’t get the
beautiful flowers.
4. I ____ say you are right.
5. He didn’t _____ (to) answer questions in class.
6. The little boy _____ to go across the street alone because he is very independent.
Dare
daren’t
dared
dare
dare
1. dare-dared
2. 否定句, 疑问句和条件状语从句
3. 直接加动词原形
1. dare- dared-dared
2. dare to do sth.
3. 助动词 + not + dare (to)
do sth.
Clip
dares
Mistake Correction
1. I can able to draw very well.
2. He maybe busy.
3. I also can play the piano.
4. He may be know the answer.
5. He may late if he didn’t catch the bus.
am
实义动词前，
系动词、助动词、情态动词后
may be
can also
might be late
=Maybe he is busy.
=Maybe he knows the answer.
6. To make our country more beautiful, rubbish should throw
in bins.
7. -- Must I leave
-- No, you mustn’t.
8. Would you like anything to eat
9. He will able to arrive here in three days.
10. The chair needs to repair.
should be thrown
needn’t/ don’t have to/ don’t need to
something
will be able
repairing/ to be repaired
Guessing game
猜诗词
1. If Winter comes, ____ Spring be far behind
2. Gather sweet blossoms while you ____;
And not the twig devoid of flowers.
3. The vernal wind has greened the Southern shore again;
When ____ the moon shine bright on my return O when
4. How ____ it be so clear and cool
For water fresh comes from its source.
冬天到了，春天还会远吗？
问渠那得清如许？为有源头活水来。
can
can
有花堪折直须折， 莫待无花空折枝。
春风又绿江南岸， 明月何时照我还。
will
may
Difficulty 1: can & be able to
1. I _____________ cook.
2. They _______________ solve the problem yesterday.
3. He has ____________ drive already.
4. We will __________ see him next week.
can/ am able to
could/ were able to
been able to
be able to
重难点归纳
两者都表能力。
can用在现在和过去。
be able to：
1. 多种时态
2. 经过努力做成
Difficulty 2: 易混疑问句
-- May/ Can I park my car here
-- Yes, you ____ / ____.
-- No, you ______ / _____ /_____________.
-- Must I finish my homework now
-- Yes, you ____.
-- No, you ______ / ___________ / ___________.
-- Need I answer the question
-- Yes, you ______/ ______.
-- No, you ______.
may
can
mustn’t
can’t
had better not
must
needn’t
don’t have to
don’t need to
must
have to
needn’t
Should teenagers _______ (ask) to move out when they start working In many Western countries, teenagers __________ (allow) to move out at eighteen. Their parents believe that they should __________ (educate) to take care of themselves from a young age. This way, when they ____ (start) working they can manage their own lives.
be asked
are allowed
be educated
start
Difficulty 3: 情态动词的被动语态
情态动词+ be + done
Fill in the blanks with the correct forms of the words in brackets.
clip
Difficulty 4: 情态动词表推测
must > may / could/ might > can’t
1. A: Where’s Jean
B: I’m not sure. She ________
(is/ might be/must be) in the laboratory.
2. A: Everyone is going to the pool after school.
B: Really It __________
(must be / can’t be /could be ) hot outdoors.
3. A: That’s the phone.
B: Hmm. I wonder who it ________
(must be / could be / should be).
might be
must be
could be
4. A: I wonder if they are Jim’s glasses.
B: This pair of glasses _______
(can’t be / might be /could be) his. He doesn’t wear
glasses.
can’t be
Difficulty 5: 推测时态
He must ____ (know) the answer to the question.
2. He might __________ (sleep) now.
3. The kids can’t ________ (see) the film before.
4. It may ____ (rain). There are some clouds.
将来
正在
过去
现在
be sleeping
have seen
rain
现在/ 将来 情态动词+ do
正在 情态动词+ be + doing
过去 情态动词+ have + done
know
Many teenagers have hobbies. But sometimes these ___ get in the way of their schoolwork, and parents _____ worry about their success at school. Teenagers often think they _____________ (allow) to practice their hobbies as much as they want.
Liu Yu agrees. He thinks he is serious about running and he ______________ (allow) to decide for himself. It is the only thing he has ever wanted to do.
However, his parents disagree. They think he _____ to spend more time on his homework to enter university. He ______ know what ____ happen if he doesn’t end up as a professional runner. Only then ____ he have a chance to achieve his dream.
needs
用合适的词填空。
will
will
should
should be allowed
should be allowed
can
might
Feedback
may/ might/ could/will
may/ could
Today my class had a discussion about whether walking dogs should allow in the community or not. Here is our group’s opinions.
We don’t think walk dogs should be allowed in the community. The community is a public place for everyone to enjoy, but if people will walk their dogs in the community, dogs’ bark may make too many noise. And if dogs pee and poop, that maybe bad for the environment. What's more, all dogs bite. Some people, especially the children, may bitten by dogs.
As for me, I m afraid of dogs, so I hate people walk dogs in the community. I think dogs need their own parks. If so, dogs will have a safe place to play and exercise. Only in this way everyone will be happy.
walking
much
may be
may be bitten
walking
should be allowed
will
Mistake Correction
链接中考
语篇填空 I
What can 9-year-olds do At nine, Theodore Roosevelt did an amazing thing. He and his cousins opened the “Roosevelt Museum of Natural History” in his bedroom. _____ were twelve specimens (标本) in it. The twelve specimens included a few seashells(海贝), some dead insects and some birds' nests.
Roosevelt was born in 1858. At birth, Roosevelt was not healthy. He often found ___ hard to breathe. Because Roosevelt was often ill, his body was small and weak. But he decided ____ face life's challenges with a strong spirit.
He loved studying. Instead ___ playing, he often observed (观察) nature and then read and wrote about it.
Roosevelt had a wide range of interests. He was also fond of politics. In 1901, someone shot President McKinley and killed him. Then Roosevelt became ___ President of the USA.
to
it
There
of
the
5. Though broken into pieces, you ____ have no fright;
You’ll purify the world by watering it e’er white.
6. Before my bed a pool of night;
____ it be hoarfrost on the ground
7. Who ____ believe its spirit high
____ I express my grief in word
8. You ____ enjoy a great sight;
By climbing to a greater height.
粉身碎骨浑不怕，要留清白在人间。
无人信高洁，谁为表予心。
欲穷千里目，更上一层楼。
can
Can
床前明月光，疑是地上霜。
would
Could
will
Guessing game
猜诗词
今日背书打卡：根据自己老师布置的任务完成
[7:00前完成打卡]；
2.独立完成一篇阅读，一篇补全对话（周报第六期专项 21）。