2016年人教最新版pep初中初二八年级英语下册Unit1 What's the matter？精品ppt课件
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Man can not live without air. Learning English _____ can be difficult.
Can _______ I use your bike?
can/could:
2.在疑问句中，用could可表示请 求，语气较委婉。
He asks if he could ____ smoke here.
advisability ought to/should have to
necessity
must
A. can
Your mother brings you up and takes good care of you, so when she is old, you ___ look after her in return.
只用be able to的情况： a. 位于助动词后。 b. 情态动词后。 c. 表示过去成功地做了某事时,只能用 was/ were
able to,不能用could。
can/be able to区别 : 1.A big fire broke out in
ABC hotel yesterday. Luckily, everyone was able to run out of __________ the building.
while crossing the road.
can/be able to区别:
Edison always wondered why hens could hatch (孵) chickens while he was not able to.
Question: Are the two modal verbs interchangeable (互换) ? If not, why?
he is much too short.
A. needn’t B. can’t
C. should
last winter.
D. may
7. — I heard they went skiing in the mountains — It ____ true because there was little snow
He’s such a nice person that can’t commit the crime. he ______
How can you be so careless! 你怎么会如此地粗心！
can/could: 4. can never/can’t……too表示 “无论怎样…也不过分”，“越…越 好” 。 You can’t be too careful 你过马路的时候再小心也不为过。
A you say that you 5. How ___
really understand the whole story if you have covered
only part of the article?
A. can B. must
C. need
D. may
B be a policeman, for 6. Mike ___
there.
C
A. may not be
B. won’t be
C. couldn’t be
D. mustn’t be
2.Obligation (义务):
I’m so tired! I have to do the training for at least 10 hours a day!
Although Liu Xiang is so gifted in hurdle race… …yet he must work hard to win the gold medal.
can表示与生俱来的能力或一种客观可能，而 be able to更加强调通过后天的学习和努力获 得的能力，或者在某个客观的场合和背景下， 能做到的事情。
Sum up
1. can 和 be able to 1) can (could) 表示能力、可能, 只用于 现在时和过去时。
2) be able to可以用于各种时态。
— Could ____I have the television on? can/may — Yes, you _____. / No, you _____ can’t/I’m afraid not
can/could:
3.表示惊异、怀疑、不相信的态度。（主 要用在否定句、疑问句或惊叹句中）
Can this be true?
Grammar: Modal verbs
语法特征
• 情态动词有一定的意义 • 无人称和数的变化 • 通常不带to • 表示说话人的语气或情绪
1.Ability (能力):
Liu Xiang can run the 110m hurdle race within 13
can/could: 1. can 一般表示与生俱来的能力或 者一种客观可能性,还可以表示请 求和允许 。
can _____
2. She speak both English and French.
1. They will ______ D run this machine on their own in three months. A. can B. could C. may D. be able to A seat 2,000 2. That big cinema ______ people. A. can B. should C. ought to D. is able to
3.(2007福建) My MP4 player isn’t in my bag.Where ___I A have put it? A. can B. must C. should D. would
4. A left-luggage office is a place where bags
____be B left for Leabharlann Baidu short time, especially at a railway station. A. should B. can C. must D. will
Can _______ I use your bike?
can/could:
2.在疑问句中，用could可表示请 求，语气较委婉。
He asks if he could ____ smoke here.
advisability ought to/should have to
necessity
must
A. can
Your mother brings you up and takes good care of you, so when she is old, you ___ look after her in return.
只用be able to的情况： a. 位于助动词后。 b. 情态动词后。 c. 表示过去成功地做了某事时,只能用 was/ were
able to,不能用could。
can/be able to区别 : 1.A big fire broke out in
ABC hotel yesterday. Luckily, everyone was able to run out of __________ the building.
while crossing the road.
can/be able to区别:
Edison always wondered why hens could hatch (孵) chickens while he was not able to.
Question: Are the two modal verbs interchangeable (互换) ? If not, why?
he is much too short.
A. needn’t B. can’t
C. should
last winter.
D. may
7. — I heard they went skiing in the mountains — It ____ true because there was little snow
He’s such a nice person that can’t commit the crime. he ______
How can you be so careless! 你怎么会如此地粗心！
can/could: 4. can never/can’t……too表示 “无论怎样…也不过分”，“越…越 好” 。 You can’t be too careful 你过马路的时候再小心也不为过。
A you say that you 5. How ___
really understand the whole story if you have covered
only part of the article?
A. can B. must
C. need
D. may
B be a policeman, for 6. Mike ___
there.
C
A. may not be
B. won’t be
C. couldn’t be
D. mustn’t be
2.Obligation (义务):
I’m so tired! I have to do the training for at least 10 hours a day!
Although Liu Xiang is so gifted in hurdle race… …yet he must work hard to win the gold medal.
can表示与生俱来的能力或一种客观可能，而 be able to更加强调通过后天的学习和努力获 得的能力，或者在某个客观的场合和背景下， 能做到的事情。
Sum up
1. can 和 be able to 1) can (could) 表示能力、可能, 只用于 现在时和过去时。
2) be able to可以用于各种时态。
— Could ____I have the television on? can/may — Yes, you _____. / No, you _____ can’t/I’m afraid not
can/could:
3.表示惊异、怀疑、不相信的态度。（主 要用在否定句、疑问句或惊叹句中）
Can this be true?
Grammar: Modal verbs
语法特征
• 情态动词有一定的意义 • 无人称和数的变化 • 通常不带to • 表示说话人的语气或情绪
1.Ability (能力):
Liu Xiang can run the 110m hurdle race within 13
can/could: 1. can 一般表示与生俱来的能力或 者一种客观可能性,还可以表示请 求和允许 。
can _____
2. She speak both English and French.
1. They will ______ D run this machine on their own in three months. A. can B. could C. may D. be able to A seat 2,000 2. That big cinema ______ people. A. can B. should C. ought to D. is able to
3.(2007福建) My MP4 player isn’t in my bag.Where ___I A have put it? A. can B. must C. should D. would
4. A left-luggage office is a place where bags
____be B left for Leabharlann Baidu short time, especially at a railway station. A. should B. can C. must D. will