1、Section A(Grammar Focus-4c)Period FourTo learn how to use must,might,could and cant for making inferences It must be Carlas.It could be Meis hair band.Im not sure,but it cant be a dog.laboratoryoutdoorscoatsleepyn.实验室实验室adv.在户外；在野外在户外；在野外n.外套；上衣外套；上衣adj.困倦的；瞌睡的困倦的；瞌睡的Words ReviewlabWhose volleyball
2、is this?It must be Carlas.She loves volleyball.Whose hair band is this?It could be Meis hair band.Or it might belong to Linda.They both have long hair.What did you see that night?Im not sure,but it cant be a dog.It wasbigger.I think it might be a bear or a wolf.这是谁的排球？这是谁的排球？_ _is this?一定是卡洛的，她喜欢打排球
3、。一定是卡洛的，她喜欢打排球。It _ _Carlas.She loves volleyball.这是谁的发带？这是谁的发带？Whose _ _is this?可能是可能是May的。或者可能是属于的。或者可能是属于Linda的。的。他们都留长发。他们都留长发。It _ _Meis hair band.Or it _ _Linda.They both have long hair.Whose volleyballmust behair bandcould bebelong tomight那天晚上你看见了什么？那天晚上你看见了什么？What did you see_ _?我不太确定，但肯定不是一只
4、狗。它比较大。我不太确定，但肯定不是一只狗。它比较大。我想可能是一只熊或者狼。我想可能是一只熊或者狼。Im_ _,but it _ _a dog.It was bigger.I think it _ a bear or a wolf.that nightnot suremight becant be【观察领悟观察领悟】仔细观察例句仔细观察例句,体会情态动词的具体含义。体会情态动词的具体含义。1.The e-dictionary must be Nancys.She is the only one who has an e-dictionary in our class.2.The man mu
5、st be waiting for the bus at the bus station.情态动词表示推测情态动词表示推测【观察领悟观察领悟】3.The watch could belong to Mike.I know he has one like this.4.The novel might be Lindas.She likes reading novels.5.The black backpack cant belong to Ruth.Hers is red.情态动词表示推测情态动词表示推测情态动词的基本概念。情态动词的基本概念。情态动词表示说话者的语气和情态情态动词表示说话者的语
6、气和情态,无人称和数的变化无人称和数的变化;本身虽有一定的本身虽有一定的意义意义,但不能独立作谓语但不能独立作谓语,后接动词原后接动词原形形,一起构成谓语。常用来表示说话人一起构成谓语。常用来表示说话人对有关行为或事物的态度和看法对有关行为或事物的态度和看法,认为认为其可能、应该或必要等其可能、应该或必要等;或用来表示或用来表示推测或判断。推测或判断。情态动词情态动词must,may,can,could,might等用来表示推测和判断。具体用法如下：等用来表示推测和判断。具体用法如下：1.must：意为：意为“一定；准是一定；准是”。表示说表示说话人对事物的推测的把握性非常大。话人对事物的推测
7、的把握性非常大。They are wearing school uniforms,they must be students.表示推测的情态动词表示推测的情态动词 “must be+现在分词现在分词”意为意为“一定正在一定正在”，表示对说话的时刻推断另一表示对说话的时刻推断另一个动作正在发生或进行。个动作正在发生或进行。eg:She must be cooking now because I can smell something delicious.表示推测的情态动词表示推测的情态动词“must have+过去分词过去分词”意为意为“一定一定”，表示对过去情况的肯定的推表示对过去情况的肯定的
8、推测。测。eg:I cant find my keys.I must have left them at home.表示推测的情态动词表示推测的情态动词2.can:can表示推测时，常用于否定句、疑表示推测时，常用于否定句、疑问句中，问句中，cant意为意为“不可能；应该不是不可能；应该不是”。常用句型为：常用句型为：“can/cant be+表语表语”意为意为“（不）可能不）可能”，表示对现在情况的否定推表示对现在情况的否定推测。测。eg:That cant be Maria,because shes in hospital.Theres someone outside.Who can it
9、 be?表示推测的情态动词表示推测的情态动词3.could/might/may:如果表示对所推测如果表示对所推测事情没有很大的把握，用事情没有很大的把握，用could或或might或或may。它们常用于肯定句或疑问句中，意。它们常用于肯定句或疑问句中，意为为“也许；可能也许；可能”。eg:He might be doing his homework now.Could the news be true?表示推测的情态动词表示推测的情态动词1.Excuse me,whose book is this?Itbe Johns.It has his name on it.A.mustB.needC.c
10、ant单项选择。单项选择。2.The man _ be my English teacher.He has gone to Canada.A.mightB.mustC.cant3.Martinget here in time,but I am not sure.A.must B.might C.can D.should1.A:Wheres Jean？B:Im not sure.She _(is/might be/must be)in the laboratory.might be4a Choose the best way to complete each sentence using the
11、 words in brackets.laboratory=lab2.A:Everyone is going to the pool after school.3.B:Really?It _(must be/cant be/could be)hot outdoors.must be4a Choose the best way to complete each sentence using the words in brackets.adv.3.A:Thats the phone.4.B:Hmm.I wonder who it_5.(must be/could be/should be).cou
12、ld be4a Choose the best way to complete each sentence using the words in brackets.wonder=want to know4.A:I wonder if these are Jims glasses.B:They _(cant be/might be/could be)his.He doesnt wear glasses.cant be4a Choose the best way to complete each sentence using the words in brackets.是否是否5.A:I hear
13、 water running in the bathroom.B:It _(could be/must be/cant be)Carla.She was thinking of taking a shower.must be4a Choose the best way to complete each sentence using the words in brackets.hear sb.doing sth.听见某人正在做某事听见某人正在做某事1.A:Many people are wearing coats.B:The weather must be _.2.A:Sally has bee
14、n coughing a lot.B:She might be_.3.A:This restaurant is always very crowded.B:The food_.4.A:Whenever I try to read this book,I feel sleepy.B:It cant _.very coldhaving a coldmust be deliciousbe interesting4b Complete these responses.4c.Look at this picture of a room.How much can you tell about the pe
15、rson who lives here?Is it a boy or a girl?What are his/her hobbies?Discuss your ideas with a partner.A:It could be a girls room because its very tidy.B:I guess so.But it might be a boys room because the clothes look like boys clothes.一、单项选择一、单项选择1.Listen!Helen is singing in the next room.-It _ be Helen.She has gone to Guangzhou.A.would B.cant C.could D.might 2.There were a large number of people _garbage(垃圾垃圾).A.collect B.collecting C.collected D.was collectingThere be sb.(sth.)doing sth.有人（其他东西）正在做某事。有人（其他东西）正在做某事。3.Im really _ because of my test.A.anxious B.agree C.wonderful D.comfortable
