1、Module 12 HelpUnit 3 Language in use1 祈使句表达说话人对对方的叮嘱、劝告、希望、禁止、建议、请求或命令等。祈使句一 般以动词原形开头，无时态和数的变化。1.动词原形构成的祈使句动词原形构成的祈使句肯定形式Do型，即动词原形（+宾语）+其他Be型，即Be+表语（名词或形容词）+其他否定形式：动词原形前加dont，也可以用否定副词never开头。祈使句祈使句此类祈使句喑含的主语是you，但通常省略。句首或句末有时加please，还可以加上称呼语，用逗号与句子主体隔开。2PPT模板： PPT课件： a nice day!祝你度过美好的一天！Dont waste
2、your time!别浪费时间 了！Never be late again!再也不要迟到 了！Come this way please!请走这边。Please be quiet,boys!男孩们，请安静！Make sure hes warm.确保他不受凉。Dont use the lift.不要使用电梯。32.lets构成的祈使句构成的祈使句肯定结构：Let+宾语+动原+其他否定结构：Dont let+宾语+动原+其他 Let+宾语+not+动原+其他3.无动词祈使句无动词祈使句祈使句还可用名词、形容词、副词以及以no开头的短语充当。Let them go!让他们走。Dont let him
3、go.=Let him not go.别让他走。Help!救命！Careful!小心！No parking!禁止停车！Hands up!举起手来！41._ up,Anna.Its seven thirty.One more minute,Mum.A.Get B.Gets C.Geting D.Got2.Im leaving now._you turn off the lights and the computer.A.To make sure B.Make sure C.Made sure D.Making sure3.改为否定句Open the door,please._ _ the doo
4、r,please.AADont open5用法区别用法区别情态动词情态动词must,can,couldmust,can,could表推表推测测must表推测时常用在肯定句中，语气较为表推测时常用在肯定句中，语气较为肯定，此时肯定，此时must可以翻译成可以翻译成“一定；一定；准是准是”。can表推测时常用在否定句或疑问句中，是有把握的否定推测，意为“不可能”。could可以用于肯定句、否定句或疑问句中，也可以表示过去的可能性，表示可能发生，程度比can弱。6请仔细对比下列一组句子Who sent the present?Can it be your brother?是谁送来的礼物啊？会是你哥哥
5、吗？（询问可能性）It must be your brother.I saw him in your room just now.肯定是你哥哥，我刚才看见他在 你的房间里。（语气强烈，表示非常肯定）It cant be my brother.He is still in France.不可能是我哥哥，他还在法国呢。（表示不可能）It could be your brother.He said he might come back.可能是你哥哥。他说过他可能会回来。（表示猜测可能）71.Dont lift the boy up.That_be harmful for him.A.need B.c
6、ould C.shouldnt D.cant2.That T-shirt_be expensive because its made by a famous designer.A.cant B.mustnt C.must D.should3.That man_be my English teacher.He has gone to Canada.A.neednt B.mustnt C.must D.cantBCD84.Someone is knocking at the door.Who _ it be at this hour of day?A.may B.can C.must D.shou
7、ld5.You _be happy with the strong public support youve received.Yes,youre right.Im really excited.A.may B.can C.must D.needBC96.Johnson _ be a policeman.He is much too short.A.may B.mustnt C.should D.cantD10ExerciseExercises s111.It is dangerous.You _keep out!2.These stairs are not safe.You _use the
8、m.3.The rocks are falling down.You _get hit.4.The river is too deep.You _swim in it.5.Betty _know what to do,because she did some basic medical training.1.Complete the sentences with could,must or mustnt.mustmustntcouldmustntmustkeep out意为“留在外面；置身.之外”。12 2.Underline the correct words to complete the
9、 first aid instructions.1 Get /Do not get medical help immediately.2 Ask/Do not ask them where the pain is.3 Lift/Do not lift them because you may drop them.4 Keep/Do not keep them warm.133.Complete the poster about earthquake with the correct form of the words and expressions in the box.do not use
10、hide under keep leave stay away1 _from the windows.2 _a table.3 _the lift.4 _the building quickly when the ground stops shaking.5 _calm.When there is an earthquakeStay awayHide underDo not useLeaveKeep144.Complete the conversation with the words and expressions in the box.Tony:Daming is training har
11、d for the big match.Lingling:Yes,the team has a good(1)_this year.Tony:Oh no,Damings(2)_.Hes down!Lingling:It looks like hes(3)_.Tony:Daming,what happened?chance Cover in pain in trouble medical chance in troublein pain15Daming:Its my leg.Lingling:(4)_him with my coat.Tony:But dont move him.Lets wai
12、t for someone with(5)_training.Lingling:Ok.Cover medical 165.Complete the news report with the correct form of the words in the box.clear inside power rock trouble warnInformation is coming in that there could be(1)_ because of heavy rain in the north.The government is(2)_people about falling(3)_.So
13、me roads have a lot of rocks on them,but people are trying to(4)_them quickly.In some places there is no(5)_.And people must stay(6)_to keep away from falling rocks.troublewarning rocks clear power inside17Now read the report again and check()the true sentences.1 There are problems everywhere becaus
14、e of rain.2 The government is warning people about an earthquake.3 Some roads in the mountains have a lot of rocks on them.4 People are trying to clear the rocks off the roads.5 There is no problem with power.181 We were having _at home when the earthquake happened.2 The room started to _.3 Father s
15、houted to everyone to get under the _.4 We could not get out of the room because the_ would not open.5 My father called for help on his _.6 People came to help us and we left our_plete the sentences.dinnershakekitchen tabledoormobile phoneflat197.Read the passage and choose the correct answer.1 What
16、 is the best title for this passage?a)2004 Asian tsunami.b)A girl saves tourists from tsunami.c)Underwater earthquakes2 What did Tilly notice?a)Water coming to the beach.b)People watching the water.c)Bubbles in the water.3 What does her teacher think of Tilly?a)She is lucky b)She does not do silly t
17、hings.c)She is a clever student.20A ten-year-old girl saved about one hundred other tourists in 2004 by warning them that a tsunami.ten-year-old “十岁的”基数词+year(注意单数)+old 用作形容词 表示“几岁的”复合形容词结构：基数词名词单数形容词，在句中只能做定语，不能做表语。e.g.She has a eightyearold brother.（中考链接）I dont believe that this_boy can paint such
18、 a nice picture.A.five years old B.five-years-old C.five-year-old C21by warning them that a tsunami.by意思是“通过；以（某种方式）”，后面常跟名词，代词，V-ing形式，表示通过某种方式、手段等。提问时用how。The old man makes his living by selling newspapers.by的其他几种用法：1、表示方位“在.旁边”。He sat down by the door.2、表示时间“在.之前”。Can you finish the work by 5 ocl
19、ock.3、表示交通方式“搭乘”。I go to school by bike.4、by固定搭配。by the way顺便说一下 by oneself独自一人222.Tillys teacher was very proud of her.be proud of sb.为某人感到自豪 Jack is very proud of his model plane.杰克为他的飞机模型感到自豪。（中考链接）Parents enjoy any progress their children have made and will feel_them.A.angry with B.interested in
20、 C.proud of D.worried about C23Module task:Making a poster about preventing accidents at school.8.Make a list of accidents that can happen at school.School accidentsHow whereHurting hands/knees/legsRunning fast/playing footballPlayground Hitting your headClimbing a treeGarden 249.Work in groups.Choose an accident from the list in Activity 8 and give instructions about what to do.FirstSecondThird When there is School accident2510.Make a poster about preventing accidents at school using must/mustnt.Then Present your poster to the class.26
