最新情态动词公开课ppt
合集下载
相关主题
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
May you succeed. 祝你成功！
3.表示推测、可能（只用于肯定句， 疑问句则要用can或could）。 He may be very busy now.
5.Making requests (提出要求):
informal
will can could
formal
would
I don’t know how to use this equipment!
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 。
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.
— Could ____I have the television on? can/may — Yes, you _____. / No, you _____ can’t/I’m afraid not
advisability ought to/should have to
necessity
must
Your mother brings you up and takes good care of you, so when she is old, you ___ look after her in return.
just called me from his home 15 seconds ago.
A.may B.might C.must
must
1. must 表示肯定的猜测，译为“一定”， 不能用于否定句或疑问句。 This must be your pen. He must be doing his homework now. He must have arrived already.
A.can B.may C.have to D.must
very uncertain
might may could (can) should
almost certain
ought to will must
1.He _____ be at home. A.may B.might C.must 2.He _____ be at home, for he
1.Shall we begin our lesson? 2.When shall he be allowed to leave hospital? 3.Shall I carry this bag for you?
You shall fail if you don‘t work harder. 警告 He shall be punished according to the rule. 威胁 允诺 He shall have the book when I finish it. 等我读完这本书，就会给他的。
1.A big fire broke out in ABC hotel yesterday. Luckily, everyone was able to run out of __________ the building.
2. She speak both English and French.
can _____
may/might:
1. 表示许可。表示请求、允许时， might比may的语气更委婉一些。 — Might/May I use your computer? — Yes, you can. /No, you can’t/mustn’t.
may/might: 2.用于祈使句中表示祝愿。
May you be happy all your life.
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?
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！
Question: Are the two modal verbs interchangeable (互换) ? If not, why?
cΒιβλιοθήκη Baidun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。
can/be able to区别:
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。
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.
Can you help me with my training?
6.Making suggestions (提出建议):
It’s too hot to take exercise in the afternoon.
Shall we do the training in the morning?
shall: 1.Shall用于第一、第三人称疑问 句中，表示说话人征求对方的意 见、向对方请示或提供帮助 。
must
2. 表示“坚持”（常用于固定句型：if you must do sth. 如果你非得要做某事）
如果你真的要走，那就悄悄离开。
If you must leave, do it quietly.
—They___ be doing the experiment in the lab. —Why？ —Because the lights are still burning. A.could C.must B.can D.would
3.表示推测、可能（只用于肯定句， 疑问句则要用can或could）。 He may be very busy now.
5.Making requests (提出要求):
informal
will can could
formal
would
I don’t know how to use this equipment!
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 。
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.
— Could ____I have the television on? can/may — Yes, you _____. / No, you _____ can’t/I’m afraid not
advisability ought to/should have to
necessity
must
Your mother brings you up and takes good care of you, so when she is old, you ___ look after her in return.
just called me from his home 15 seconds ago.
A.may B.might C.must
must
1. must 表示肯定的猜测，译为“一定”， 不能用于否定句或疑问句。 This must be your pen. He must be doing his homework now. He must have arrived already.
A.can B.may C.have to D.must
very uncertain
might may could (can) should
almost certain
ought to will must
1.He _____ be at home. A.may B.might C.must 2.He _____ be at home, for he
1.Shall we begin our lesson? 2.When shall he be allowed to leave hospital? 3.Shall I carry this bag for you?
You shall fail if you don‘t work harder. 警告 He shall be punished according to the rule. 威胁 允诺 He shall have the book when I finish it. 等我读完这本书，就会给他的。
1.A big fire broke out in ABC hotel yesterday. Luckily, everyone was able to run out of __________ the building.
2. She speak both English and French.
can _____
may/might:
1. 表示许可。表示请求、允许时， might比may的语气更委婉一些。 — Might/May I use your computer? — Yes, you can. /No, you can’t/mustn’t.
may/might: 2.用于祈使句中表示祝愿。
May you be happy all your life.
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?
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！
Question: Are the two modal verbs interchangeable (互换) ? If not, why?
cΒιβλιοθήκη Baidun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。
can/be able to区别:
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。
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.
Can you help me with my training?
6.Making suggestions (提出建议):
It’s too hot to take exercise in the afternoon.
Shall we do the training in the morning?
shall: 1.Shall用于第一、第三人称疑问 句中，表示说话人征求对方的意 见、向对方请示或提供帮助 。
must
2. 表示“坚持”（常用于固定句型：if you must do sth. 如果你非得要做某事）
如果你真的要走，那就悄悄离开。
If you must leave, do it quietly.
—They___ be doing the experiment in the lab. —Why？ —Because the lights are still burning. A.could C.must B.can D.would