unit1 modal verbs[下学期]
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| 名称 | unit1 modal verbs[下学期] |  | |
| 格式 | rar | ||
| 文件大小 | 105.6KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 通用版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2006-02-18 14:55:00 | ||
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课件11张PPT。 Book 3，Unit 1 Grammer 情态动词的用法 高一级 陈良明 情态动词（一）
情态动词体现说话者的语气、情感、态度。不能
单独作谓语，必须和动词原形连用。情态动词没有
人称和数的变化，但有的有过去时。本单元主要讲
can,could,may ,might,will,would,shall和should的用
法。 Can 和could
1)表示”能够做‥‥‥” 。如：No one could pass the exam last week.
2)表示许可。如：You can stay here until your father comes to pick you up .
3)表示请求，这时，could 比can的语气要委婉．如：Could you lend me a pen,please?
4)表示可能、猜测。常用于否定句和疑问句：有时也用于肯定句，表示的是逻辑上的可能性。如：He can’t be at home at this time. Mr.Smith is in poor health,and he can be ill at any time.
can和be able to 的区别
1)形式上的区别：只有现在式和过去式；而则可用于多种时态．如：is able to,were able to,will be able to等．
2)语义上的区别：通常用来指一种固有的能力，如：．鸭子会游水。而则常用来指一次具体的行为,且是通过了努力才能够做成的事.．如：Though compietely drunk last night,he was abie to find his home.虽然昨天他完全喝醉了，但他还是可以找到家。
3）could和was able to在肯定句中，表示特定的某一过去能力要用，但否定句中不受这一限制。如：He was very ill,so he couldn’t/wasn’t able to finish the work on time. May 和might
1）表示许可，可与can互换。
2）表示请求，语气较婉转。
3）表示可能性，但说话人把握不大（若有确切把握且在肯定句中则用must，否定句中用can’t）。通常只用于肯定句或否定句。在肯定句中表示的是事实上的可能性。如：Jone looks weak. He may be ill.
Will和 would
1）两者都可以表示承诺和意愿。如：The whole family will come for dinner . She asked if I would help.
2）表示请求，此时用would语气较委婉。如：Would you join us?
3）would还常用来表示过去的习惯和传统。如：He would sit alone for a whole morning when he was upset during his childhood. Shall 和should
1）表示承诺和意愿，但常用于第一人称。shall用于第二、三人称时，表示说话者的意愿、意志，意思是“应、要、必须”。如：I promise that she shall get a nice present on her birthday.
2）表示建议。如：You shuold learn more about western culture if you want to study abroad.
3）表示预测“应当”。如：It’s nearly 7 o’clock. Dad should come home soon.
Must和 can’t
两者都可以表示推测，must表示肯定的推测，用于肯定句中。can’t表示否定的推测，常用于否定句中。They must have got lost.他们一定是迷路了。
Need
1)作情态动词时无人称和时态的变化。意思是：需要。
２)肯定回答用must，否定回答用needn’t. 如：
--Need I go with you? -- Yes,you must. -- No,you needn’t.单项填空
1、---Isn’t that Ann’s husband over there?
---No,it_________be him—I’m sure he doesn’t wear glasses.
A.can’t B.must not C.won’t D.may not
2、”The interest________be divided into 5 parts,according to the agreement made by both sides.” declared the judge.
A.can’t B.should C.must D.shall
3、The fire spread through the hotel very quickly but every one_________ get out.
A.had to B.would C.could D.was able to
DAD4、---Will you stay for lunch?
---Sorry,_______. My brother is coming to see me.
A.I mustn’t B.I can’t C.I needn’t D.I won’t
5、---Write to me when you get home.
---_________.
A.I must B.I should C.I will D.I can
6.John,look at the time.________ you play the piano at such
a late hour.
A.Must B.Can C.May D.Need
7.He______ have completed his wok,otherwise,he couldn’t
be enjoying himself by the seaside.
A.should B.must C.wouldn’t D.can’t
BCAB8.I_________ have been more than six years old when
the accident happened.
A.shouldn’t B.couldn’t C.mustn’t D.needn’t
9.There________ be any difficulty about passing the
road test since you have practiced a lot in the
driving school.
A. mustn’t B. shan’t C. shouldn’t D. needn’t
10.---I’ve taken someone else’s green sweater by mistake.
---It _______Harry’s. He always wears green.
A. could be B. will be C. mustn’t be D. has to be BCA
情态动词体现说话者的语气、情感、态度。不能
单独作谓语，必须和动词原形连用。情态动词没有
人称和数的变化，但有的有过去时。本单元主要讲
can,could,may ,might,will,would,shall和should的用
法。 Can 和could
1)表示”能够做‥‥‥” 。如：No one could pass the exam last week.
2)表示许可。如：You can stay here until your father comes to pick you up .
3)表示请求，这时，could 比can的语气要委婉．如：Could you lend me a pen,please?
4)表示可能、猜测。常用于否定句和疑问句：有时也用于肯定句，表示的是逻辑上的可能性。如：He can’t be at home at this time. Mr.Smith is in poor health,and he can be ill at any time.
can和be able to 的区别
1)形式上的区别：只有现在式和过去式；而则可用于多种时态．如：is able to,were able to,will be able to等．
2)语义上的区别：通常用来指一种固有的能力，如：．鸭子会游水。而则常用来指一次具体的行为,且是通过了努力才能够做成的事.．如：Though compietely drunk last night,he was abie to find his home.虽然昨天他完全喝醉了，但他还是可以找到家。
3）could和was able to在肯定句中，表示特定的某一过去能力要用，但否定句中不受这一限制。如：He was very ill,so he couldn’t/wasn’t able to finish the work on time. May 和might
1）表示许可，可与can互换。
2）表示请求，语气较婉转。
3）表示可能性，但说话人把握不大（若有确切把握且在肯定句中则用must，否定句中用can’t）。通常只用于肯定句或否定句。在肯定句中表示的是事实上的可能性。如：Jone looks weak. He may be ill.
Will和 would
1）两者都可以表示承诺和意愿。如：The whole family will come for dinner . She asked if I would help.
2）表示请求，此时用would语气较委婉。如：Would you join us?
3）would还常用来表示过去的习惯和传统。如：He would sit alone for a whole morning when he was upset during his childhood. Shall 和should
1）表示承诺和意愿，但常用于第一人称。shall用于第二、三人称时，表示说话者的意愿、意志，意思是“应、要、必须”。如：I promise that she shall get a nice present on her birthday.
2）表示建议。如：You shuold learn more about western culture if you want to study abroad.
3）表示预测“应当”。如：It’s nearly 7 o’clock. Dad should come home soon.
Must和 can’t
两者都可以表示推测，must表示肯定的推测，用于肯定句中。can’t表示否定的推测，常用于否定句中。They must have got lost.他们一定是迷路了。
Need
1)作情态动词时无人称和时态的变化。意思是：需要。
２)肯定回答用must，否定回答用needn’t. 如：
--Need I go with you? -- Yes,you must. -- No,you needn’t.单项填空
1、---Isn’t that Ann’s husband over there?
---No,it_________be him—I’m sure he doesn’t wear glasses.
A.can’t B.must not C.won’t D.may not
2、”The interest________be divided into 5 parts,according to the agreement made by both sides.” declared the judge.
A.can’t B.should C.must D.shall
3、The fire spread through the hotel very quickly but every one_________ get out.
A.had to B.would C.could D.was able to
DAD4、---Will you stay for lunch?
---Sorry,_______. My brother is coming to see me.
A.I mustn’t B.I can’t C.I needn’t D.I won’t
5、---Write to me when you get home.
---_________.
A.I must B.I should C.I will D.I can
6.John,look at the time.________ you play the piano at such
a late hour.
A.Must B.Can C.May D.Need
7.He______ have completed his wok,otherwise,he couldn’t
be enjoying himself by the seaside.
A.should B.must C.wouldn’t D.can’t
BCAB8.I_________ have been more than six years old when
the accident happened.
A.shouldn’t B.couldn’t C.mustn’t D.needn’t
9.There________ be any difficulty about passing the
road test since you have practiced a lot in the
driving school.
A. mustn’t B. shan’t C. shouldn’t D. needn’t
10.---I’ve taken someone else’s green sweater by mistake.
---It _______Harry’s. He always wears green.
A. could be B. will be C. mustn’t be D. has to be BCA