最新高中英语《情态动词》ppt课件
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情态动词全部ppt课件
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Some festivals are held to satisfy the ancestors, who might return either to help or to do harm.
推测
17
--- Excuse me. Is this the right way to the Summer Palace?
3. will/would
1. 表示意愿，will表示现在的意愿， would表示过去的意愿。
I will stick to my plan though all of you are against it.
I told him to give up smoking, but he wouldn’t
3. During the vacation, he would visit me
every four days.
过去的习惯
4. Will / Would you pass me the ball,
please?
请求
习惯，倾向 5. Birds will fly to the south in the winter. 24
You can go with them if you like.
--- Could/Can I have a look at your new design? --- Yes, of course you can.
(注意此处答语不能用could)
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3）用在肯定句中，表示_客__观__上__有__可_ 能 Anybody can make mistakes. Driving on the snowy roads can be very dangerous.
Some festivals are held to satisfy the ancestors, who might return either to help or to do harm.
推测
17
--- Excuse me. Is this the right way to the Summer Palace?
3. will/would
1. 表示意愿，will表示现在的意愿， would表示过去的意愿。
I will stick to my plan though all of you are against it.
I told him to give up smoking, but he wouldn’t
3. During the vacation, he would visit me
every four days.
过去的习惯
4. Will / Would you pass me the ball,
please?
请求
习惯，倾向 5. Birds will fly to the south in the winter. 24
You can go with them if you like.
--- Could/Can I have a look at your new design? --- Yes, of course you can.
(注意此处答语不能用could)
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3）用在肯定句中，表示_客__观__上__有__可_ 能 Anybody can make mistakes. Driving on the snowy roads can be very dangerous.
《情态动词》PPT课件
work our this problem. 如果你睡个好觉，那么你就能做出这个题目。 3、表示过去的能力： could表示过去一般的能力， 但不表示做或未做某事；
was/ were able to表示过去有能力并且成功地做了某事， 相当于managed to do something/ succeeded in doing something；
• Mr. Bush is on time for everything. How can it be that he was late for the opening ceremony? (表疑惑、惊讶)
表示请求、允许、允诺
1. 当对方是决策者时，你代表你（们）自己（I， We），或代表第三者（he,she,they）向对方 （you）请示或提出建议时用：
Revision:Modal verbs
情态动词专项复习
How many modal verbs
do you remember?
(情态动词)
一，常见的情态动词有：can, could, may, might ,must, shall, should, will, would, need, have to等
4、具有情态动词的某些特征的有：have(had) to, used to.
情态动词的特征
1、有一定的词义，但不能单独作谓语，它们要和行 为动词或连系动词连用，构成谓语。
2、适用于主语的各种人称和数 have to例外，主语 是第三人称单数时，要用has to）。如：
We/ He must work hard. 我们/他一定要努力工作。 I have to walk home. 我得步行回家。 He has to walk home. 他得步行回家。
was/ were able to表示过去有能力并且成功地做了某事， 相当于managed to do something/ succeeded in doing something；
• Mr. Bush is on time for everything. How can it be that he was late for the opening ceremony? (表疑惑、惊讶)
表示请求、允许、允诺
1. 当对方是决策者时，你代表你（们）自己（I， We），或代表第三者（he,she,they）向对方 （you）请示或提出建议时用：
Revision:Modal verbs
情态动词专项复习
How many modal verbs
do you remember?
(情态动词)
一，常见的情态动词有：can, could, may, might ,must, shall, should, will, would, need, have to等
4、具有情态动词的某些特征的有：have(had) to, used to.
情态动词的特征
1、有一定的词义，但不能单独作谓语，它们要和行 为动词或连系动词连用，构成谓语。
2、适用于主语的各种人称和数 have to例外，主语 是第三人称单数时，要用has to）。如：
We/ He must work hard. 我们/他一定要努力工作。 I have to walk home. 我得步行回家。 He has to walk home. 他得步行回家。
高中英语 情态动词用法归纳全.ppt
更多的时态。
I’ll not be able to come this afternoon. 当表示“经过努力才得以做成功某事”时应用be able
to，不能用Can。如：
He was able to go to the party yesterday evening in spite of the heavy rain.
can 表示能力，意为 “能 会” 表示推测， 意为 “可能”， 常用于否定句和疑问句中 表示请求， 允许， 意为“可以”
could can 的过去式，意为“能、会”， 表示过去的能力 在疑问句中表示委婉请求
may 表示请求、许可，意为“可以” 表示推测，常用于肯定句中，意为“可能、也许”
might may的过去式 表示推测，常用于肯定句中，意为“ 可能、也许 ”
Can this be true? This can’t be done by him. How can this be true?
二、 may, might
1) 表示请求和允许。might比 may语气更委婉，而不是过去式。 否定回答时可用can’t 或mustn’t，表示“不可以，禁止”。
----Might/ May I smoke in this room? ---- No, you mustn’t. ---- May/Might I take this book out of the room? ---- Yes, you can. (No, you can’t / mustn’t. ) 用May I...？征徇对方许可时比较正式和客气，而用Can I...？在
2) 表示劝告、建议和命令。should, ought to可通用，但在疑 问句中常用should。
I’ll not be able to come this afternoon. 当表示“经过努力才得以做成功某事”时应用be able
to，不能用Can。如：
He was able to go to the party yesterday evening in spite of the heavy rain.
can 表示能力，意为 “能 会” 表示推测， 意为 “可能”， 常用于否定句和疑问句中 表示请求， 允许， 意为“可以”
could can 的过去式，意为“能、会”， 表示过去的能力 在疑问句中表示委婉请求
may 表示请求、许可，意为“可以” 表示推测，常用于肯定句中，意为“可能、也许”
might may的过去式 表示推测，常用于肯定句中，意为“ 可能、也许 ”
Can this be true? This can’t be done by him. How can this be true?
二、 may, might
1) 表示请求和允许。might比 may语气更委婉，而不是过去式。 否定回答时可用can’t 或mustn’t，表示“不可以，禁止”。
----Might/ May I smoke in this room? ---- No, you mustn’t. ---- May/Might I take this book out of the room? ---- Yes, you can. (No, you can’t / mustn’t. ) 用May I...？征徇对方许可时比较正式和客气，而用Can I...？在
2) 表示劝告、建议和命令。should, ought to可通用，但在疑 问句中常用should。
情态动词-完整版PPT课件
情态动词 modal verbs
1.情态动词的用法特点
1）情态动词 除 ought 和 have 外，后面只能 接不带to 的不定式。 2）情态动词没有人称，数的变化，即情态动 词第三人称单数不加-s。 3）情态动词没有非谓语形式，即没有不定式， 分词等形式。
can could may might shall should must will would ought to
have to dare need used to
表示推测
情态动词
不表示推测
2.表示推测——情态动词的重要用法.
情态动词
对将来
对现在
对过去
m肯ust/定sho的uld 推测
+ V. + V. + have done
常见must be + be doi定的推测 can’t, couldn’t
疑问的推测
can, could
+ V.
+ V.
+ have done
+ be doing
可以用not表示“可能不”
+V.
+ V.
+ have done
+ be doing
+ V.
+ V.
+ have done
+ be doing
不同的“肯定”程度可按下列层次排列： He is at home. (事实) He must be at home.（非常肯定的推断） He ought to be at home.（很可能） He could be at home.（很可能） He may be at home.（仅仅可能而已） He might be at home.（或许, 非常不确定） He might not be at home.（也许不在家） He may not be at home. （比might可能） He couldn’t be at home.（很可能不在家） He can’t be at home.（一定不在家）
1.情态动词的用法特点
1）情态动词 除 ought 和 have 外，后面只能 接不带to 的不定式。 2）情态动词没有人称，数的变化，即情态动 词第三人称单数不加-s。 3）情态动词没有非谓语形式，即没有不定式， 分词等形式。
can could may might shall should must will would ought to
have to dare need used to
表示推测
情态动词
不表示推测
2.表示推测——情态动词的重要用法.
情态动词
对将来
对现在
对过去
m肯ust/定sho的uld 推测
+ V. + V. + have done
常见must be + be doi定的推测 can’t, couldn’t
疑问的推测
can, could
+ V.
+ V.
+ have done
+ be doing
可以用not表示“可能不”
+V.
+ V.
+ have done
+ be doing
+ V.
+ V.
+ have done
+ be doing
不同的“肯定”程度可按下列层次排列： He is at home. (事实) He must be at home.（非常肯定的推断） He ought to be at home.（很可能） He could be at home.（很可能） He may be at home.（仅仅可能而已） He might be at home.（或许, 非常不确定） He might not be at home.（也许不在家） He may not be at home. （比might可能） He couldn’t be at home.（很可能不在家） He can’t be at home.（一定不在家）
高中英语《情态动词》ppt课件
表示推测——情态动词的重要用法.
情态动词
对将来
肯定的推测
+ V.
must 常见must be
对现在
对过去
+ V.
+ have done
+ be doing
可能的推测
may!! might
否定的推测
can’t!! couldn’t
疑问的推测
can!! could
+ V.
+ V.
+ have done
三.Must +have done 表示对过去发生的事情作出的肯 定判断
它们在玩篮球!! 它们一定完成了作业？？
They are playing basketball!! they must have finished their homework. 路是湿的？？昨天晚上一定下雨了？？
The road is wet. It must have rained last night.
She couldn’t have been at home.
三. can/could have done “本可以!!本来可能已经”用 于肯定句中!!表示对过去发生的事情做出的判断!!
您本来可以考的更好？？ You could have had a better mark.
may/might
一.May/might表示推测时!!只能用于陈述句!!表示对现 在或将来要发生的动作把握不大？？ 它们明天可能会到这里来？？
It can’t be true! I don’t believe it.
When you are quite sure about something!! you
高考英语情态动词课件(共21张PPT)
He shall get his money.
5)Should 表示说话人的惊奇、愤怒、失望等特殊情感 It’s surprising that Mary should love such a person as Jack. It’s strange that … It’s unthinkable that … I’m sorry that…
肯定疑问 Dare we run? 句
Do we dare (to) run?
否定疑问 Dare he not run? Doesn’t he dare to run ? 句
Need, needed
Need /needed
1、情态动词用于否定句，疑问句 He needn’t worry about it.
This will be the house you're looking for .
Will , would
5）would常用于虚拟条件句，表示与事实相反或不太可能实现的情况 But for your help we would have been late .
6) Would 表示过去的习惯性动作或某人的一典型动作，又使人厌烦的感 觉。 He would go swimming in summer when he was in the countryside.
3.表示请求和允许，与may同义，相当于be allowed to.常用语口语中。 You can smoke in this room. Could I borrow you dictionary?
Can , could
4.用于一些固定句型 a. Cannot ( can never) …too…怎么也不过分
如询问某种可能时，应用can。 He must know my address. （一定） He can’t know my address. （一定不） Can he know my address? （询问可能性）
5)Should 表示说话人的惊奇、愤怒、失望等特殊情感 It’s surprising that Mary should love such a person as Jack. It’s strange that … It’s unthinkable that … I’m sorry that…
肯定疑问 Dare we run? 句
Do we dare (to) run?
否定疑问 Dare he not run? Doesn’t he dare to run ? 句
Need, needed
Need /needed
1、情态动词用于否定句，疑问句 He needn’t worry about it.
This will be the house you're looking for .
Will , would
5）would常用于虚拟条件句，表示与事实相反或不太可能实现的情况 But for your help we would have been late .
6) Would 表示过去的习惯性动作或某人的一典型动作，又使人厌烦的感 觉。 He would go swimming in summer when he was in the countryside.
3.表示请求和允许，与may同义，相当于be allowed to.常用语口语中。 You can smoke in this room. Could I borrow you dictionary?
Can , could
4.用于一些固定句型 a. Cannot ( can never) …too…怎么也不过分
如询问某种可能时，应用can。 He must know my address. （一定） He can’t know my address. （一定不） Can he know my address? （询问可能性）
高中英语 H__情态动词课件 新人教版必修4
3) must+ v
He must be at the library.
can’t+ v
第十页，共86页。
4) Must用语肯定句中表示“偏偏”。 Naturally, after I told her what to do, my daughter
must go and do the opposite. 自然地，在我交代女儿做什么之后，她偏偏要做相反
Whenever we were in the country, we
_____w_o_u_l_d____play hide-and-seek in the fields.
2.表示过去的状态，只能用 used to，不可用would。例 如：
There ____________ be a park.
of our hotel that payment ____ be made in
cash.
A、shall B、need
A C、will D、can
第二十页，共86页。
8. shall / should/ ought to
shall
1）What shall we do now？
Shall she come right now?
第十二页，共86页。
B She is a bit shy and _____ stand up and
answer the teacher's questions.
A.dares not
B.doesn't dare to
C.dare not to
D.dares not to
I wonder how he _A__ to his father like
高中英语情态动词课件
2） 情态动词没有人称，数的变化，但有些 情态动词，如can、will也有一般式和过去式 的变化。 3） 情态动词的“时态”形式并不是时间区 别的主要标志，不少情况下，情态动词的现 在式形式和过去式形式都可用来表示现在时 间、过去时间和将来时间。
二．情态动词的语法功能
(1). We use modal verbs to talk about:
May I go home now?
It may be true. She may come tomorrow. He might have some fever.
表示可能性的推测,译为 “大概,可能”用might 时显得更加不肯定
May you succeed!
用于祈使句表示祝愿
May you have many more days as happy as this one!
It’s 4:30,They should be in New York by now.
常规、常理的推测（正常情况下）按理应该
He ought to succeed, as he is so diligent. It is strange that it should be so hot today.
Drill(小练)
--- What’s the name?
--- Khulaifi. _______ I spell that for you?
A. Shall
B. Would
C. Can
D. Might
（10江苏）
—I haven’t got the reference book yet, but I’ll have a test on the subject next month.
二．情态动词的语法功能
(1). We use modal verbs to talk about:
May I go home now?
It may be true. She may come tomorrow. He might have some fever.
表示可能性的推测,译为 “大概,可能”用might 时显得更加不肯定
May you succeed!
用于祈使句表示祝愿
May you have many more days as happy as this one!
It’s 4:30,They should be in New York by now.
常规、常理的推测（正常情况下）按理应该
He ought to succeed, as he is so diligent. It is strange that it should be so hot today.
Drill(小练)
--- What’s the name?
--- Khulaifi. _______ I spell that for you?
A. Shall
B. Would
C. Can
D. Might
（10江苏）
—I haven’t got the reference book yet, but I’ll have a test on the subject next month.
模块十一情态动词_课件
① The dinner must be ready at 6:00.
② I must go now.
③You have to pass a special exam to get
into the school 1.He has to come back to school at weekend. 2. My mother had to work 12 hours a day.
注意：作为实意动词的need的 否定形式： don’t need to do 疑问形式：Do sb need to do sth ? 1.I need to go on a business trip to Wuhan (一般疑问句并作否定回答) need to Do _______ you ______________ go on a business trip to Wuhan? I don’t need to. ---No, ____________________ 2. Does she need to come ? needs --- Yes, she _______. B 3.Need she _____ the classroom again? A. cleans B. clean C. to clean D. cleaned
into the school.
B. 两者的否定形式和意思不同。
You mustn’t enter this room. You don’t have to hand it in now. mustn’t表示“禁止，不允许”。 don’t have to表示“不必”.
两者的提问方式不同。
1.I must start now.(一般疑问句) Must I start now? 2.They have to finish the homework immediately . (一般疑问句) Do they have to finish the homework immediately?
高中英语情态动词各种用法课件(共47张PPT)
一 、表能力 ：表现在的或一般的能力：表示 现在的或一般的能力用can 或 be able to. 一 般的能力是指你无论什么时候做什么事情就 能做到的能力。表示现在的能力或一般的能 力时，can比be able to 更普遍。
A computer can’t think for itself; it must be told what to do. （表示一般的能力）
This can’t / couldn’t be done by him. (表示不 相信)
He could be on his way home now. （could 不 如 may / might常用）
Can this be done by him? （表示一种疑惑、 惊讶）
（3）would, could, should, might 并不一定 与过去的时间有关，而是表示可能性弱于他 们相应的现在形式。如：
do something / succeeded in doing sth.
The fire spread through the hotel very
quickly but everyone was able to get out. (过去有能力并成功地做了某事)
(3) could have + 过去分词，表示过去有 能力做但未做。
表示对过去已经发生的行为进行推测，意为 “想必 / 准是/ 一定做了某事
It must have rained last night, for the road was quite muddy.
The lights were out. They must have been asleep.
2. can have done
情态动词 专题课件(共28张PPT)
➢ 5. (may/can) ____c_a_n_____you swim? 表示能力
➢ 6. Listen, please. You (may not/might not)
____m__a_y__n_o_t______ speak during this exam.
表示不允许
may, might, can, could
may, might, can, could
表示猜测
➢ 1. They (can/might) ____m_i_g_h_t___be away for the
weekend but I’m not sure.
表示许可
➢ 2. You (may/might) ___m__a_y____leave now if you
can and could
➢So he can carry heavy books. ➢ability ➢He couldn't open the door by himself. ➢ability ➢Could you open the door, please? ➢request
can and could
表示猜测(不可能)
➢7. They (can not/may not) ___c_a_n_n_o_t_______ still be out, the light is on in the house.
➢8. You (couldn’t/might not) 表示许可
____c_o_u_ld_n_’_t_______ smoke on the bus.
➢9. With luck, tomorrow (can/could) ___c_o_u_ld____be a cooler day. 表示猜测
高一英语英语必修语法情态动词课件
Copyright 2004-201m1uAsstp/ohsaevPettyoL, td. shall/should (ought to), will/would need, dare/dared
2020年5月7日星期四
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• 情态动词的特点： 1.情态动词自身都有一定的意义， 但不能表示正在发生或已经发生的
The guest may arrive this afternoon.
---Can he attend the meeting?
---Yes, he_m__a_y. I am not sure.
2020年5月7日星期四
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3. 表示祝愿,位于句首
eg. May you succeed!
May you have a good journey!
针对过去---- should have done
To my surprise, he should be a thief.
He should have lied to me yesterday.
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5.must的主要用法
1. 必须。must表主观“必须” have to 表客观“不得不”
neeCdo/dpayrreigthot d2o00st4h-2011 Aspose Pty Ltd.
don’t/doesn’t/didn’t dare to do sth
2020年5月7日星期四
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1.Being afraid of making mistakes ,he ____ answer his teacher's question
Should he comEev,aIlwuaotuioldnleotnylyo.u know. ted3w. “ith居A然sp”o，se“.S竟li然de”s ,f表or说.N话E人T意3料.5之C外lie。nt Profile 5.2
2020年5月7日星期四
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• 情态动词的特点： 1.情态动词自身都有一定的意义， 但不能表示正在发生或已经发生的
The guest may arrive this afternoon.
---Can he attend the meeting?
---Yes, he_m__a_y. I am not sure.
2020年5月7日星期四
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3. 表示祝愿,位于句首
eg. May you succeed!
May you have a good journey!
针对过去---- should have done
To my surprise, he should be a thief.
He should have lied to me yesterday.
2020年5月7日星期四
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5.must的主要用法
1. 必须。must表主观“必须” have to 表客观“不得不”
neeCdo/dpayrreigthot d2o00st4h-2011 Aspose Pty Ltd.
don’t/doesn’t/didn’t dare to do sth
2020年5月7日星期四
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1.Being afraid of making mistakes ,he ____ answer his teacher's question
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精品最新 高中英语 情态动词用法归纳(全)(共63张PPT)
1. You shall fail if you don’t work hard.(警告) 2. He shall have the book when I finish it.(允诺) 3. He shall be punished.(威胁)
六、 will, would
1) 表示请求、建议等，would更委婉。 Will / Would you pass me the ball, please? 2) 表示意志、愿望和决心。 1. I will never do that again. 2. They asked him if he would go abroad.
六、 will, would
3) would表示过去反复发生的动作或某种倾向。would表示 过去习惯时比used to正式，且没有“现已无此习惯”的 含义。
1. During the vacation, he would visit me every other day. 2. The wound would not heal. 4) 表示估计和猜想。 It would be about ten o’clock when she left home.
三、 must, have to
1) 表示必须、必要。 You must come in time. 在回答引出的问句时，如果是否定的，不能用mustn’t（禁止，
不准），而用needn’t, don’t have to（不必）. ---- Must we hand in our exercise books today? ---- Yes, you must. ---- No, you don’t have to / you needn’t.
must 表示主观看法，意为“必须、应该” 表示有把握的推测，用语肯定句
六、 will, would
1) 表示请求、建议等，would更委婉。 Will / Would you pass me the ball, please? 2) 表示意志、愿望和决心。 1. I will never do that again. 2. They asked him if he would go abroad.
六、 will, would
3) would表示过去反复发生的动作或某种倾向。would表示 过去习惯时比used to正式，且没有“现已无此习惯”的 含义。
1. During the vacation, he would visit me every other day. 2. The wound would not heal. 4) 表示估计和猜想。 It would be about ten o’clock when she left home.
三、 must, have to
1) 表示必须、必要。 You must come in time. 在回答引出的问句时，如果是否定的，不能用mustn’t（禁止，
不准），而用needn’t, don’t have to（不必）. ---- Must we hand in our exercise books today? ---- Yes, you must. ---- No, you don’t have to / you needn’t.
must 表示主观看法，意为“必须、应该” 表示有把握的推测，用语肯定句
情态动词讲解课件
1.It may rain this afternoon. 2.She might come to join us this afternoon. 3.I suppose he might have missed the train.
1.May you succeed. 2.May you live happily! 3.May she rest in peace.愿她安息。
语法 ：情态动词
---Modal Verbs
情态动词 Modal Verbs
I 情态动词的定义 情态动词是一种本身有一定的词义，表 示说话人的情绪、态度或语气的动词， 但不能单独作谓语，只能和其他动词原 形构成谓语。 情态动词数量不多，但用途广泛，主要 有： can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) .
惯用句式： “may as well或might(just)as well+动词原 形”意为“最好，满可以，倒不如”，相 当于“had better.
1.There is nothing to do, so I may as well go to bed. 2.You may as well tell us now, we’ll find out sooner or later. 3.I suppose we might as well go home.
may, might, can, could
1. They (can/might) ___________be away for the might weekend but I’m not sure. 表示许可 2. You (may/might) __________leave now if you may wish. 表示请求 3. (could/may) __________you open the window a could bit, please? 表示猜测 4. He (can/could) __________be from America, could judging by his accent. 5. (may/can) ___________you swim? 表示能力 can 6. Listen, please. You (may not/might not) _________________ speak during this exam. may not
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___________________________ _______________________
2.Must +be doing/do 表示对现在的动作进行肯定推测
他现在一定在看小说 He must be reading novels now. 他们买了一辆新车。 他们一定很有钱
They have bought a new car. They must have a lot of money.
It can’t be Mary. She has fallen ill. 她不可能在说谎。 She couldn’t be telling lies.
___________________________ _______________________
2. can/could have done 对过去发生行为的可能性进行 推测: 刚才我还看见他了， 所以他不可能出国的。 I saw him just now so he couldn’t have gone abroad. 门是锁着的， 所以她不可能在家。
eg. He used to be a quiet boy. ( √ )
He would be a quiet boy. ( × )
___________________________ __________Байду номын сангаас____________
高考链接
1. ---- Will you go skating with me this winter vacation?
---- It _B__ . ( 2002上海)
A. all depended
B. all depends
___________________________ _______________________
3.might/may have done,表示对过去发生的动作进行 可能性推测，
他可能去医务室了。 He may have gone to the clinic. 他可能已经从报纸上知道这个消息了。 He might have read about the news in the newspaper.
___________________________ _______________________
3.Must +have done 表示对过去发生的事情作出的肯定 判断
他们在玩篮球， 他们一定完成了作业。
They are playing basketball, they must have finished their homework. 路是湿的。昨天晚上一定下雨了。 The road is wet. It must have rained last night.
___________________________ _______________________
can/could
1. can /could 表示推测时，只能用在否定句或疑问句 中。
It’s so late. Can Tom be reading? 这么晚了，汤姆还在看书吗？
这个人不可能是玛丽， 她生病了。
Grammar ( 陶文武 )
modal verb
___________________________ _______________________
情态动词有一定的意义，但没有人称和数的 变化，不能独立使用，它和后面的动词构成 谓语．
只作情态动词的 can/could, may/might, ought to， must
The door was locked. She couldn’t have been at home.
___________________________ _______________________
3. can/could have done “本可以，本来可能已经”用 于肯定句中，表示对过去发生的事情做出的判断，
___________________________ _______________________
will/would
Will /Would you do…? 表请求 表意志，愿望，决心 would表过去反复发生得动作或某种倾向
“总是,总要” used to表过去常常（现在已没有这种习惯）
“过去常常” used to 可于状态动词连用 would不可以
他们可能还在等我们呢。 They may be still waiting for us. 2.might 可用于指过去的行为或者表示可能性更小。 他也许在作功课吧。
He might be doing his homework now. 我问他我是否可以离开。 I asked him if I might leave. I asked him “May I leave now?”
你本来可以考的更好。 You could have had a better mark.
may/might
1.May/might表示推测时，只能用于陈述句，表示对现 在或将来要发生的动作把握不大。 她们明天可能会到这里来。
They may come here tomorrow.
___________________________ _______________________
可情态可实义的 need, dare/dared 可情态可助动词的 shall/should, will/would 相当于情态动词的 have to, used to
___________________________ _______________________
Must , can/could, may/might 的用法 must 1.Must 表示推测时， 只能用于肯定句。 这个电脑肯定出了问题。 There must be something wrong with the computer. 你努力学了一整天， 一定累了吧 You have worked hard all day. You must be tired.
2.Must +be doing/do 表示对现在的动作进行肯定推测
他现在一定在看小说 He must be reading novels now. 他们买了一辆新车。 他们一定很有钱
They have bought a new car. They must have a lot of money.
It can’t be Mary. She has fallen ill. 她不可能在说谎。 She couldn’t be telling lies.
___________________________ _______________________
2. can/could have done 对过去发生行为的可能性进行 推测: 刚才我还看见他了， 所以他不可能出国的。 I saw him just now so he couldn’t have gone abroad. 门是锁着的， 所以她不可能在家。
eg. He used to be a quiet boy. ( √ )
He would be a quiet boy. ( × )
___________________________ __________Байду номын сангаас____________
高考链接
1. ---- Will you go skating with me this winter vacation?
---- It _B__ . ( 2002上海)
A. all depended
B. all depends
___________________________ _______________________
3.might/may have done,表示对过去发生的动作进行 可能性推测，
他可能去医务室了。 He may have gone to the clinic. 他可能已经从报纸上知道这个消息了。 He might have read about the news in the newspaper.
___________________________ _______________________
3.Must +have done 表示对过去发生的事情作出的肯定 判断
他们在玩篮球， 他们一定完成了作业。
They are playing basketball, they must have finished their homework. 路是湿的。昨天晚上一定下雨了。 The road is wet. It must have rained last night.
___________________________ _______________________
can/could
1. can /could 表示推测时，只能用在否定句或疑问句 中。
It’s so late. Can Tom be reading? 这么晚了，汤姆还在看书吗？
这个人不可能是玛丽， 她生病了。
Grammar ( 陶文武 )
modal verb
___________________________ _______________________
情态动词有一定的意义，但没有人称和数的 变化，不能独立使用，它和后面的动词构成 谓语．
只作情态动词的 can/could, may/might, ought to， must
The door was locked. She couldn’t have been at home.
___________________________ _______________________
3. can/could have done “本可以，本来可能已经”用 于肯定句中，表示对过去发生的事情做出的判断，
___________________________ _______________________
will/would
Will /Would you do…? 表请求 表意志，愿望，决心 would表过去反复发生得动作或某种倾向
“总是,总要” used to表过去常常（现在已没有这种习惯）
“过去常常” used to 可于状态动词连用 would不可以
他们可能还在等我们呢。 They may be still waiting for us. 2.might 可用于指过去的行为或者表示可能性更小。 他也许在作功课吧。
He might be doing his homework now. 我问他我是否可以离开。 I asked him if I might leave. I asked him “May I leave now?”
你本来可以考的更好。 You could have had a better mark.
may/might
1.May/might表示推测时，只能用于陈述句，表示对现 在或将来要发生的动作把握不大。 她们明天可能会到这里来。
They may come here tomorrow.
___________________________ _______________________
可情态可实义的 need, dare/dared 可情态可助动词的 shall/should, will/would 相当于情态动词的 have to, used to
___________________________ _______________________
Must , can/could, may/might 的用法 must 1.Must 表示推测时， 只能用于肯定句。 这个电脑肯定出了问题。 There must be something wrong with the computer. 你努力学了一整天， 一定累了吧 You have worked hard all day. You must be tired.
