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1、 情态动词 初中组-赵铖为什么要有情态动词？试比较 The necklace isnt in my pocket.It is lost.The necklace isnt in your pocket.It must be lost.表达说话人对所描述的情景或事件的态度-说话人的心态家族成员基本用法Can could 能，可以，会Maymight 可能是，或许是Must 必须Shallshould 应该Will-would 意志，意愿，打算Need 需要情态动词特殊之处？Jack isnt on the ship.He must be sick.有词意，不单独作谓语和其他动词连用Jack is
2、nt on the ship.He is sick.无人称和数的变化Jack can afford the ticket.后加动词原形Can,could 的用法You jump,I jump.你跳，我就跟着跳Jack can swim.Can Rose swim?Yes,she can.No,she cant.表示能力，意为“能，会”Can could You cant find the key.He took it away with him.表示怀疑猜测，常用于否定句We can go now.口语中，表示请求或允许.相当于mayCan couldI could swim when I w
3、as young.Could-can过去式Could I come to see you tomorrow?Yes,you can.No,Im afraid not.could也可表示请求，语气委婉，主要用于疑问句，不可用于肯定句考题再现江湖-Whose T-shirt is this?(2011湖北黄冈)-It be Jacks.its small for him.A.cant;much too B.cant;too much C.mustnt;much too D.mustnt;too muchCant否定猜测 Much too+形容词Too much+不可数名词答案：A考题再现江湖The
4、 talented boy（Jack）write lyrics when he was at the age of ten.(2011江西)A.may B.could C.must Could-can的过去式 表示能力 答案：B考题再现江湖 -Can Jack ride a horse?-No,he.(2011北京)A.neednt B may not C.cant D.mustnt Can提问 回答cant 答案：CMay，mightThe necklace may help me to get her heart.表示猜测“可能，也许”用于肯定句She might not love me,
5、he thought.might为may的过去式，但也可代替may，语气较为婉转客气或更加不肯定 May mightMay I teach you how to spit?Yes,you may.No,you?表示请求，许可。意为“可以”注意：1.主语为第一人称2.否定回答mustnt或cant。不可以，禁止。May you success!表示祝愿May be vs.maybeJack may be a rich boy.Maybe Jack is a rich boy.May be 情态动词+动原Maybe 副词“大概，也许：相当于perhaps，用语句首考题再现江湖-What would
6、 you send to your sister as the Christmas gift,Jack?-I havent decided yet.I send her a hand-bag.(2009四川成都)A.shall B.may C.must May 表示可能 答案：B考题再现江湖-what are you going to order?-well,I think I try the fried eggs,but Im not sure yet.(2011福建)A.must B.might C.shouldnt D.cantMight-may 的过去式 not sure不确定 猜测答
7、案：BmustWinning that ticket，Rose，was the best thing that ever happened to me.it brought me to you.And Im thankful for that，Rose.Im thankful.You must do me this honor，Rose.Promise me youll survive.That you wont give up，no matter what happens，no matter how hopeless.Promise me now，Rose，and never let go
8、of that promise.赢得船票.是我一生最幸运的事，让我可认识你，认识你真荣幸，万分荣幸，你一定要帮我，答应我活下去，答应我，你不会放弃.无论发生什么事，无论环境怎样.Rose，答应我，千万别忘了。Must You must do me this honor，Rose.Promise me youll survive.必须，一定You must be joking!How can you leave me alone!猜测 用于肯定句Must You mustnt leave me again!禁止，不允许Must I go with him?No,you neednt.No,you
9、 dont have to.Must的问句 肯定回答用must，否定用neednt/dont have to.Must vs.can 猜测The ship is fantastic.It cant sink.The ship is too large,it must sink.can 和 must在 表推测时，can一般否定句中，而must 常用于肯定句中。Must vs.have toHe said that I must sit still.Must表示主观My mother will find me,so I have to go back quickly.Have to表示客观需求 考
10、题再现江湖-Fifty dollars for such a T-shirt!You be joking!(2011江苏南京)-Im serious.Its made of silk.A.must B.need C.may D.can must 情态动词表示猜测Must be 一定是 can be 可能是 may be 或许是答案：A考题再现江湖-Must I return the book this week?(2011广东深圳)-No,you.You can it for 20 days.A.mustnt;keep B.neednt;borrow C.neednt;keep D.mustn
11、t;borrow must 否定回答-neednt Keep持续性 borrow-瞬间答案：C考题再现江湖-look!It be the new woman manager.-it be her.She has just left for America.A.can;mustnt B.must;cant(2008包头)C.must;mustnt D.cant;must肯定猜测：must否定猜测：cant答案：BShall-shouldGod shall wipe away all the tears from their eyes,and there shall be no more deat
12、h.Neither shall there be sorrow or dying，neither shall there be any more pain,for the former world has passed away.上帝擦去他们所有的眼泪，死亡不再有，也不再有悲伤和生死离别，不再有痛苦，因往事已矣。Shall shouldShall I go to the party?Shall we go to the party together?Shall用于第一、第三人称疑问句中，表示请求或征求对方意见.You shall lose me if you dont do as what I
13、 say.第二、三人称陈述句中表示许诺、决心、命令或警告.Shallshould.考题再现江湖In order to speak Chinese better,we be afraid of losing face.Because the most important thing is to practice.Remember,practice makes perfect.(2011黑龙江哈尔滨)A.should B.shouldnt C.have toShould 应该Shouldnt 不应该Have to 不得不 答案：C Will-would Ill never let go.Ill n
14、ever let go,Jack.我永不食言，永不食言，Jack。Will-would Ill never let go.Ill never let go,Jack.表意志、愿望和决心They asked if we would do that again.过去式Would you pass me the coat?表示请求、建议等，would比will委婉客气 Need（双重）区分In order to fly,you need to spread your arms.(实义)You neednt be afraid to fly.（情动）Need I finish it now?Yes,y
15、ou must./No,you neednt.情动小结He must drink a lot of milk.Because he is very weak.He must drink a lot of milk.Because he is very strong.1.基本用法Can could 能，可以，会 Must 必须Maymight 可能是，或许是 Shallshould 应该Will-would 意志，意愿，打算 Need 需要推测用法2.推测用法表示“能力”。只可用can（could）。Can you play me piano？Yes，I can表示“请求”或“许可”。can、m
16、ay、must都可用，但语气和程度不同May I go now?Can I go now?Must I go now?表示“可能”、“或许”和“推测”之意。can、may、must都可用，但语气和程度不同。He might not go out（或许没有）He cant go out（不可能）He must be in the room（一定、准是）表示推测的三种句型1)在肯定句中一般用must（一定），can,could（可能），might/may（也许，或许）。其中can的语气最强，可能性最大，其余依次递减。He must/can/may/might know the answer to this question.他一定/可能/也许知道这个问题的答案。2)否定句中用cant/couldnt（不可能），may not/might not（可能不）。You may not be right你也许不对.You can not be right你不可能对3)疑问句中表推测“可能”：用can,could,might(语气递减)Could he have finished the task?谢谢 重温经典 相关推荐：经典台词泰坦尼克号10大经典台词.doc 猫鼠游戏