1、高中英语 必修第二册 UNIT 2 Lets celebrate!UNIT 2 Lets celebrate!Using language(1)Modals（2）Look at the sentences from the reading passage and answer the questions.1What do the words in bold indicate：an order，a request，ability or possibility?a That is why Letters from Father Christmas could be the perfect book
2、.b The children must have been very excited as they opened it.c.they might not receive their presents if they were not good.The words in bold indicate possibility.2 Will the meaning of sentence（a）change if we replace“could”with “must”or“might”?3What happens if we change“must”and“might”in sentences（b
3、）and（c）into“could”?Now look for more sentences with modals in the reading passage.If we replace“could”with“must”，the meaning of sentence（a）will change.It means the speaker is quite sure about the statement.If we replace“could”with“might”，the meaning of sentence（a）will remain more or less the same.“C
4、ould”and“might”in affirmative sentences have a similar meaning when indicating possibility.If we change“must”in sentence（b）into“could”，it means the speaker is not sure about the statement，and its only a possibility.If we change“might”in sentence（c）into“could”，it means its impossible for the children
5、 to receive their presents.Rewrite the underlined sentences in the conversation using can/could，may/might and must.（At a fancy dress party.）Chris：I spent ages putting up all the balloons and flowers last night.Jean：I expect you are feeling tired now!Chris：Yes，I am.Look，that guy is dressed as Batman.
6、Is that Mike?Jean：Its possibly him.Check out that girl over there.Im sure thats Lucy.Chris：No，I dont think thats Lucy.Lucy isnt that tall.Jean：Look at those two guys dressed as chickens!Oh，theyre waving at us!Maybe theyre from our school.Chris：Lets go and find out.教材习题答案教材习题答案You must be tired now!I
7、t may/might/could be him.That must be Lucy.that cant be Lucy.They may/might/could be from our school.Look at the picture and make as many sentences as possible using can/could，may/might and must.Black Friday is one of the busiest shopping days of the year.Stores have big sales and open their doors v
8、ery early.教材习题答案教材习题答案The woman in red must be very excited to buy so many things.The man with a wallet in his hand might be a bit reluctant to pay.The woman with glasses may be very tired to get up so early and carry so many bags.The cashier might be feeling uncomfortable as he is sweating a lot.高中
9、英语 必修第二册 UNIT 2 Lets celebrate!单元语法 情态动词（2）1 can 与could（1）表示能力，常译为“能，会”。could 是 can 的过去式，表示过去 的能力。She can speak French fluently.她能讲一口流利的法语。Our daughter could walk when she was eleven months old.我们的女儿十一个月时就会走路了。（2）表示请求或许可，常译为“可以”。could 比can 的语气更加委婉。You can take the car，if you want.如果想用那辆车，你就尽管用吧。高中英语
10、 必修第二册 UNIT 2 Lets celebrate!（3）表示可能性，常用于疑问句或否定句中，指“某事是否为事实”。用于肯定的陈述句中，表示理论上的可能性，意为“有时可能会”。Can/Could she be in the classroom?她可能在教室里吗？No，she cant/couldnt.不，她不可能（在教室里）。He is confident a solution can be found.他确信能找到解决办法。（4）表示惊讶、不相信等，常用于否定句或疑问句中。This cant be the right road.不可能是这条路。【学法点拨学法点拨】（1）cant/cou
11、ldnt have done 表示对过去情况的否定推测，意为“不可能做了某事”。（2）could have done 既可表示对过去的推测，也可表示“过去本可以做某事（而实际上未做）”。高中英语 必修第二册 UNIT 2 Lets celebrate!选词填空选词填空（can/could）（1）I can speak English，but I speak Japanese.（2）She play several instruments at the age of eight.（3）Can/Could I use your studio?Of course you .（4）Anybody ma
12、ke mistakes in his or her career.（5）she still be alive after all this time?（6）It be quite cold at night here.（7）you tell me when youll be back?（8）What he be doing at this time of night?（9）I saw her just now.She have gone to Beijing.（10）He have passed the exam，but he was too careless.cantcouldcancanC
13、an/CouldcanCan/Couldcancant/couldntcould 高中英语 必修第二册 UNIT 2 Lets celebrate!2 must（1）表示“必须”，否定形式 mustnt 表示“不准，禁止”。You must be home by 11 oclock.你必须在 11 点之前回家。You mustnt smoke here.你不准在这里吸烟。Must I tell her?我必须告诉她吗？Yes，you must.是的，你必须。（或No，you neednt/dont have to.不，你不必。）高中英语 必修第二册 UNIT 2 Lets celebrate!
14、（2）表示肯定推测，意为“一定，肯定”，只能用于肯定句中。表推测时must 的否定形式是cant/couldnt。He must be nearly 90 years old now.他现在肯定将近 90 岁了。Someone must have used my umbrella yesterday.I found it wet.昨天一定是有人用了我的伞，我发现它是湿的。（3）表示“偏要，偏偏”，常指不愉快的事。If you must go，at least wait until the storm is over.如果你一定要走，至少要等到暴风雨过去。高中英语 必修第二册 UNIT 2 Le
15、ts celebrate!完成句子完成句子（1）All passengers （必须系）seat belts.（2）Cars （禁止停放）in front of the entrance.（3）（我们必须完成）the work today?No，you dont have to.（4）You （一定饿了）after all that walking.（5）Im sorry，shes not here.She （准是走了）already.（6）（你为什么非要）always interrupt me?must wearmust not be parkedMust we finishmust be
16、hungrymust have leftWhy must you高中英语 必修第二册 UNIT 2 Lets celebrate!3 may 与might（1）表示请求或许可，常译成“可以”。might 表示请求时语气更加委婉。A reader may borrow up to six books at a time.读者一次最多可借阅6 本书。May I come in?我可以进来吗？Yes，you may/can.是的，你可以。（或No，you cant/mustnt.不，你不能。）（2）表示可能性，意为“也许，可能，大概”，might 比may 的可能性要 小。may/might not
17、 表示“可能不”。Dont go any closer it might not be safe.别再走近了那可能不安全。He may have missed his train.他可能没赶上火车。高中英语 必修第二册 UNIT 2 Lets celebrate!（3）may 常用于祈使句中，表示祝愿。May you succeed!祝你成功！【误区警示误区警示】can/could 与may/might 均可表示“可能性”，在肯定句中意思相近，在否定句中含义不同。cant/couldnt 表示“不可能”，may not/might not 表示“可能不”。高中英语 必修第二册 UNIT 2 L
18、ets celebrate!选词填空选词填空（may/might）（1）You keep the book for two weeks.（2）I wonder if I speak to your son.（3）May I borrow your newspaper?Yes，you .（4）Lets speed up，or we be late.（5）He earn his living by painting，but he is not sure.（6）you have a long and fruitful marriage.完成句子完成句子（7）汤姆不可能知道这个秘密。Tom _.（8）汤姆可能不知道这个秘密。Tom _.may might may may/might may May cant/couldnt know the secret may not/might not know the secret THE END
