1、Unit Review,Learning 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 Verbs,I.词汇,1.掌握词汇：anywhere,on foot,of course,type,ship,ra
2、pid,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,electric,2.认知词汇：transportation,rail,inventor,steam,engine,locomotive,explode,distance,ir
3、on,per,magnetic,jet,jet engine,presentation,North America,highway,afar,park,fuel,imagination,hoverboard,skateboard,float,transporter,spaceship,pedal,electricity,II.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
4、,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 well,III.Giving Advice/Order,Youd betterYou shouldDont push/run.Please be quiet.,IV.Possibility and Impossibility,It can be helpful to you.He couldn
5、t take a train from Canada to London.,V.Modal Verbs,can,could,would,should,may,must,might,I 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,o
6、r I might have a fit!,Language Points 情态动词,一、表示推测(may/might,can/could,must,should,ought to),1.may(过去式 might)“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.,might,might,注意:可以用might代替may,以表示说话语气更加不肯定;may 表示推测时,不能用于疑
7、问句中.如果在疑问句中出现 may,则表示请求许可,意为“可以”.May I use your cell phone?,注意:1)可以用could代替can,以表示语气婉转;,could,2)表示推断,can不能用于肯定陈述句,但could可以用于肯定陈述句,相当于may/might;This story could be true,but I hardly think it is.,may/might,2.can(过去式could)“可能会”,That cant be true.What on earth can this mean?,couldnt,3)can 可以用于肯定陈述句,表示一时
8、的情况,意为“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“可能不”,而can not/could not意为“不可能”、“肯定不”,其语气要比may not/might not强得多.,3.must“肯定”、“准是”,You must be joking,arent you?,注意:1)must表示推测不用于否定句,因为must not/must never 只能表示禁止,意为“不准”、“不可以”;-May I watch T
9、V after supper?-No,you mustnt.(may not/cant 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,因为must在疑问句中只能表示“必须”或表示反感“(干吗)偏要”“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.应该用别的句型表示推测“肯定会”、“准会”.Youre su
10、re to succeed./It is certain that you will succeed./Im sure that youll succeed.,4.should,ought to“照说应当”,“想比一定”,“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.表示必要性,、职责、劝告、建议等(need,must,should,ought to),1.need“必需”“需要”;must“必须”-Must I be here before 9 o
11、clock?-No,you neednt.(不能说:No,you mustnt.)-Need I be here before 9 oclock?-Yes,you must.(不能说:Yes,you need.),注意:1)need作情态动词,不能用于肯定陈述句,在陈述句中,应该用need的实义动词表达.You need to be here before 9 oclock.(不能说:You need be here before 9 oclock.)2)回答Must/Need开头的问句,不能说:Yes,you need./No,you mustnt.3)表示“必须”时,must 是说话者的主
12、观看法,是积极态度.have to 则是客观需要,是消极态度。,2.表示建议、劝告.shall,should,ought to,must,You 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.请求对方做某事,疑问句中用情态动词can
13、/could,will/would表示请求比用祈使句表示请求婉转、客气.Can/Could you wait a few more days?Will/Would you please wait a few more days?,四.表示允许或征询对方许可,may/might,can/could(“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
14、.),(但不说:Yes,you might/could.),can(过去式could)/比较 be able to泛指能力(具有知识、技巧、本领而能读书、游泳、说英语、踢足球等),五.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(设法)做到某事(succeeded in doing sth./managed to do sth.),在否定句中两者都可用,在肯定陈述句和疑问句中,只能用be able to.We had a holiday yesterday,but couldnt/were
15、nt able to go to the seaside.,Exercises,1.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,danger,I.选词填空。,took,sounds,through,goes,danger
16、,1.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
17、填空。,must,must,could,can,may,May,can,III.补全对话。从方框中选择合适的句子补全对话(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,D,G,B,F,
