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Unit ReviewLearning aims:1.Know about the history of some transporters.2.Learn about the development of the future transportation.Learning important points:1.Giving Advice/Order.2.Possibility and Impossibility.Learning difficult points:Modal VerbsI.词汇词汇1.掌握词汇：掌握词汇：anywhere,on foot,of course,type,ship,rapid,invent,wheel,engineer,railway,passenger,get on/off,speed,even,certainly,invention,present,round,wing,during,factory,dangerous,humorous,as long as,drive,countryside,ride,get in,smooth,second,space,sound,dirty,electric2.认知词汇：认知词汇：transportation,rail,inventor,steam,engine,locomotive,explode,distance,iron,per,magnetic,jet,jet engine,presentation,North America,highway,afar,park,fuel,imagination,hoverboard,skateboard,float,transporter,spaceship,pedal,electricityII.词组和句型词组和句型on foot,take a train/boat/plane,of course,a type of,puttogether,steam engine,iron rails,thousands of,get on/off,(at)a top speed of,turn over and over,no parking,in a hurry,North America,take a drive,go out of,get in,think of,makeinto,all the time,go through,presentto,sound like,go wellIII.Giving Advice/OrderYoud betterYou shouldDont push/run.Please be quiet.IV.Possibility and ImpossibilityIt can be helpful to you.He couldnt take a train from Canada to London.V.Modal Verbscan,could,would,should,may,must,mightI can go almost anywhere on foot.At first,only rich people could buy cars.I would like to see hoverboards.I think someone should invent a transporter,too.May we leave our car here?I must go and get new things,or I might have a fit!Language Points 情态动词情态动词一、表示推测一、表示推测(may/might,can/could,must,should,ought to)1.may(过去式过去式 might)“可能可能”There may be little water left in the bottle.He thought it might be wise to try his luck there.She may not be waiting for you now.mightmight注意注意:可以用可以用might代替代替may,以表示说话语以表示说话语气更加不肯定气更加不肯定;may 表示推测时表示推测时,不能用于疑问句中不能用于疑问句中.如果在疑问句中出现如果在疑问句中出现 may,则表示请求许可则表示请求许可,意为意为“可可以以”.May I use your cell phone?注意注意:1)可以用可以用could代替代替can,以表示语气婉转以表示语气婉转;could2)表示推断表示推断,can不能用于肯定陈述句不能用于肯定陈述句,但但could可以用于肯定陈述句可以用于肯定陈述句,相当于相当于may/might;This story could be true,but I hardly think it is.may/might2.can(过去式过去式could)“可能会可能会”That cant be true.What on earth can this mean?couldnt3)can 可以用于肯定陈述句可以用于肯定陈述句,表示一时的情表示一时的情况况,意为意为“有时候会有时候会”;Our house is on the top of the hill,and in winter the winds can be pretty cold.4)may not/might not意为意为“可能不可能不”,而而can not/could not意为意为“不可能不可能”、“肯定不肯定不”,其语气要比其语气要比may not/might not强得多强得多.3.must “肯定肯定”、“准是准是”You must be joking,arent you?注意注意:1)must表示推测不用于否定句表示推测不用于否定句,因为因为must not/must never 只能表示禁止只能表示禁止,意为意为“不准不准”、“不可不可以以”;-May I watch TV after supper?-No,you mustnt.(may not/cant 也可也可)Judging by the smell,the food must be good,isnt it?2)must表示推测不用于疑问句表示推测不用于疑问句,因为因为must在疑在疑问句中只能表示问句中只能表示“必须必须”或表示反感或表示反感“(干干吗吗)偏要偏要”“硬要硬要”;Must I finish it by the end of this week?Why must you ask me so many questions when Im busy cooking?3)must表示推测不用于将来表示推测不用于将来.应该用别的句型应该用别的句型表示推测表示推测“肯定会肯定会”、“准会准会”.Youre sure to succeed./It is certain that you will succeed./Im sure that youll succeed.4.should,ought to “照说应当照说应当”,“想比一定想比一定”,“按理应该按理应该”Fred should /ought to be up now.My new poems should/ought to be out in a month at most.二二.表示必要性表示必要性,、职责、劝告、建议等、职责、劝告、建议等(need,must,should,ought to)1.need“必需必需”“需要需要”;must“必须必须”-Must I be here before 9 oclock?-No,you neednt.(不能说不能说:No,you mustnt.)-Need I be here before 9 oclock?-Yes,you must.(不能说不能说:Yes,you need.)注意注意:1)need作情态动词作情态动词,不能用于肯定陈述不能用于肯定陈述句句,在陈述句中在陈述句中,应该用应该用need的实义动词表达的实义动词表达.You need to be here before 9 oclock.(不能说不能说:You need be here before 9 oclock.)2)回答回答Must/Need开头的问句开头的问句,不能说不能说:Yes,you need./No,you mustnt.3)表示表示“必须必须”时时,must 是说话者的主观看是说话者的主观看法法,是积极态度是积极态度.have to 则是客观需要则是客观需要,是消极是消极态度。态度。2.表示建议、劝告表示建议、劝告.shall,should,ought to,mustYou ought to/should follow your teachers advice.You must take plenty of water with you if you want to walk alone into the desert.Shall we have a break?Lets have a break,shall we?Lets not bother him,shall we?三三.请求对方做某事请求对方做某事疑问句中用情态动词疑问句中用情态动词can/could,will/would表示请求比用祈使表示请求比用祈使句表示请求婉转、客气句表示请求婉转、客气.Can/Could you wait a few more days?Will/Would you please wait a few more days?四四.表示允许或征询对方许可表示允许或征询对方许可may/might,can/could(“不准许不准许”may not/cant/mustnt)You may/can stay here for the night.-May/Might/Can/Could I have a talk with you?-Yes,you may/can.(-No,you may not/cant/mustnt.)(但不说:Yes,you might/could.)can(过去式过去式could)/比较比较 be able to泛指能泛指能力力(具有知识、技巧、本领而能读书、游泳、具有知识、技巧、本领而能读书、游泳、说英语、踢足球等说英语、踢足球等)五五.表示能力表示能力1.I could/was able to swim well when I was only ten.2.如果指过去具体某时或某个场合能如果指过去具体某时或某个场合能(设法设法)做到某事做到某事(succeeded in doing sth./managed to do sth.),在否定句中两者都可用在否定句中两者都可用,在肯定陈在肯定陈述句和疑问句中述句和疑问句中,只能用只能用be able to.We had a holiday yesterday,but couldnt/werent able to go to the seaside.Exercises1.There were _ of footsteps outside the house.2.The cat came into the house _ the window.3.I hope everything _ well.4.Mr.Guo is out of _ now.5.It _ two hours to finish my home-work yesterday.go,sound,take,through,dangerI.选词填空。选词填空。tooksoundsthroughgoesdanger1.This book _ be Lilys.Look!Her name is on the book cover.2.Hes a famous swimmer.He said he _ swim when he was three.3.He _ do it,so can I.4.You should take your raincoat with you.It _ rain tonight.5._ I ask you a question?Yes,you _.6.When the traffic lights are red,you _ stop your car.II.用适当的情态动词填空。用适当的情态动词填空。mustmustcouldcanmayMay canIII.补全对话。补全对话。从方框中选择合适的句子补全对话从方框中选择合适的句子补全对话(有两项多余有两项多余)。A.My bike is broken,too.B.Walking is good for our healthC.Whats wrong with your bike?D.Dont you usually come to school by bike?E.There is something wrong with my bike.F.Thats right.G.I like walking.A:Morning,Mr.Wang!Youre walking today.(1)_B:Yes,I do.But sometimes I walk.(2)_ A:(3)_,so I like walking,too.Look at the sun.Its a fine day for walking today.B:(4)_ And the air today is nice and clean.Do you often come to school by bike?A:Yes,but not today.B:Why not?A:(5)_E DGBF
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