1、Grammar,Unit 4 A good read,handhand inand so onreviewreturnon timerenew,vi.交；递，给上交，递交等等n.评论vt.归还准时vt.续借；更新；重新开始,Words and phrases review,To learn to use question words+to-infinitivesTo learn to use must and have to,Objectives,Look at the following sentences.,1.Some dogs just dont know how to have fu
2、n.(七年级上册 U4)2.Im thinking about what to wear.(七年级上册 U8)3.I was just wondering how to spend the morning(新概念2 L68)4.I must go to the greengrocers.(新概念1 L79),5.He has a bad cold,Mr.Williams,so he must stay in bed for a week.(新概念1 L61)6.Eddie,I think we have to go up again.(七年级下册 U4)7.We dont have to fe
3、ed her much.(七年级下册 U8)8.Do you have to water it now?(新概念1 L125),9.Have you decided what to do with these books,Hobo?(P48)10.I have to use them to reach the box on the fridge.(P48)11.I did not know what to say either.(P51)12.“I must run away from them,”I thought,but I did not know how to get away.(P5
4、1),Idontknowwhat_ next.A.will do B.doingC.do D.todo Do we have to finish our homework this afternoon?Yes,you _.A.must B.canC.may D.need,疑问词包括疑问代词who,what,which及疑问副词when,how,where等。常和“疑问词+动词不定式”结构连用的动词和动词短语有：tell,show,think,learn,know,wonder,decide,remember,forget,understand,see,hear,ask,advise,expla
5、in,find out等。,Using question words+to-infinitives,1.V+“疑问词+to do”结构作动词的宾语。2.V+n.+“疑问词+to do”3.Be adj.(sure/clear)+“疑问词+to do”4.V+“疑问词+n.+to do”5.V+“疑问词+to do+n./prep.”注:why to do,那位年轻女子不知道怎么办。The young woman doesnt know what to do.我不知道说什么。I dont know what to say.我们必须弄懂如何使用这机器。We must know how to use
6、 the machine.我们想要学习如何写剧本。We want to learn how to write plays.,1.V+“疑问词+to do”结构作动词的宾语,The teacher told the students how to do the experiment.老师告诉学生如何做实验。Can you show me how to make a paper boat?你能给我演示怎样做一只纸船吗？,有些动词，如advise,ask,show,teach,tell等，其后可以接双宾语。,2.V+n.+“疑问词+to do”,3.Be adj.(sure/clear)+“疑问词+
7、to do”,在“疑问词+动词不定式”结构前，有时也可以是如sure,clear等的形容词。I am not sure which way to take.我不确定走哪条路。,4.V+“疑问词+n.+to do”,有些疑问词，如what,which,whose,how many,how much等，其后可以先接一个名词，再接动词不定式。I dont know which topic to choose.我不知道选哪个题目。,“疑问词+动词不定式”结构在句中还可以作主语和表语。How to use the machine is a question.（作主语）The question is wh
8、en to go there.（作表语）,5.V+“疑问词+to do+n./prep.”,“疑问词+动词不定式”作宾语时，相当于一个由该疑问词引导的宾语从句。Excuse me.Can you tell me how to get to the bookshop?=Excuse me.Can you tell me how I can get to the bookshop?,注意：所有疑问词中，只有why不可以与动词不定式连用。,Time for reflection,不定式可以和疑问代词who,what,which及疑问副词when,how,where等连用，构成不定式短语，在句子中作主
9、语、宾语、表语等。must表示主观的义务和必要，意思是“必须，得，要”，否定形式是must not;must还可以表示肯定推测，意思是“一定”。have to表示一种客观的需要，意思是“不得不”，否定形式是do not have to。,1.Im going on a field trip but I havent decided _.(2007河南)A.what to do B.to do what C.where to go D.to go where2.Excuse me.Would you please tell me _ buy a digital camera?(2007安徽)A.
10、what to B.where to C.what I can D.where can I,I.单项选择。,3.This physics problem is too difficult.Can you show me _,Wang Lin?Sure.(2008陕西)A.what to work it out B.what to work out it C.how to work it out D.how to work out it,4.We need a new leader for our Helping Hands Club,but I dont know _.Why not Mary
11、?She is always willing to help others.(2011江苏南通)A.what to choose B.how to choose C.when to choose D.who to choose,5.The math problem is so hard.I really dont know _.(2012甘肃鸡西)A.how to do it B.how to do C.what to do it6.Excuse me.Could you tell me _ get to the nearest post office?Sorry,I am new here.
12、(2013山东威海)A.how can I B.how I could C.how to D.what I can,7.Excuse me.Could you please tell me _ my car?Sure.Park it right here.Ill help you.(2013山东青岛)A.how to stop B.where to park C.where to stop D.when to park8._ I swim here?Im sorry.Children _ swim alone here.(2012广东)A.Must;cant B.May;must C.Can;
13、mustnt D.Cant;can,When I go into the clothes shop,I always cant decide _ one to buy.2.My grandfather doesnt know _ to use a computer.3.-Will you please show me _ to drive a car?-Yes,of course.Now let me tell you _ to do first.4.I will tell Lucy _ and _ to meet.,which,how,how,what,when,where,II.选用how
14、,which,what,when,where填空。,Andy doesnt know _.,what to wear,III.看图完成句子。,同意句转换:1.Gulliver didnt know where he could find other people.2.Gulliver wondered who he could ask for help.3.Gulliver didnt know how he could break the ropes.4.Gulliver found out what he could do with the tiny people.5.Gulliver d
15、ecided when he should leave Liliput.,Millie cant decide _.,which book to buy,They dont know _ to the station.,how to go,I dont know how _ from a library.,to borrow books,IV.翻译下列句子。,1.Have you decided _ _(怎样度假)?2.I dont know _(在会上说什么).3.Can you tell me _(在哪里能买到这本书)?,your holiday,how to spend,what to
16、say at the meeting,where to buy this book,Preview,To preview Integrated skills on Pages 57 and 58To learn to borrow books from a library,1.Review the Grammar.2.Finish the exercises on Pages 55-56.,Homework,Using must and have to,must与haveto是两个常用的情态动词，两词后面都接动词原形。在使用时，应注意两词间的差别。must 表示主语“有义务”的“必须”做某事，
17、强调说话人的主观看法，主要用于肯定句和疑问句；must 还可以表示肯定推测，意思是“一定”。haveto强调的是客观需要，意思是“不得不”。haveto 有人称和数的变化。,Imustworkhardatmylessons.我必须努力学习功课。(主观意愿）Ihavetolookaftermotherathome.Forsheisill.我得在家照看妈妈，因为她病了。(客观需要）It is getting dark.He has to go home now.天快黑了。他现在得回家了。(客观需要）,must的否定形式是must not，其缩写为mustnt，表示禁止，意思是“不能，不许”。hav
18、eto的否定形式是do not have to，其缩写为donthaveto。Youmustntmakeanynoiseinclass.上课时你们不许吵闹。Youdonthavetowatertheflowers.Foritisgoingtorain.你们不必浇花了，因为要下雨了。,9.Dad,must we wait until the light becomes green?Yes,Im afraid we _.Thats the traffic rule.(2013河南)A.can B.may C.have to D.need10.Students in our school _ know shouting is not allowed in the library.(2013山东莱芜)A.can B.may C.must D.need,4.Drivers _(必须系 安全带)while their cars are running on the road.5._(必须)I finish my homework now?No,_(你没必要).Your work is over today.,Must,you dont have to,must wear seat belts,
