情態(tài)動(dòng)詞PPT學(xué)習(xí)教案

1、會(huì)計(jì)學(xué)1情態(tài)動(dòng)詞情態(tài)動(dòng)詞第1頁/共47頁情態(tài)動(dòng)詞的語法特征1) 情態(tài)動(dòng)詞不能單獨(dú)做謂語, 除ought和have外, 后面只能接不帶to的不定式。 2) 情態(tài)動(dòng)詞沒有人稱, 數(shù)的變化, 但有些情態(tài)動(dòng)詞, 如can、will也有一般式和過去式的變化。3) 不少情況下, 情態(tài)動(dòng)詞的現(xiàn)在式形式和過去式形式都可用來表示現(xiàn)在時(shí)間、過去時(shí)間和將來時(shí)間。第2頁/共47頁只作情態(tài)動(dòng)詞的 can / could, may / might, ought to, must可情態(tài)可實(shí)義的 need, dare 可情態(tài)可助動(dòng)詞的 shall / should, will / would相當(dāng)于情態(tài)動(dòng)詞的 have to,

2、 used to第3頁/共47頁can 和could：第4頁/共47頁dictionary? Could I use your bike?第5頁/共47頁第6頁/共47頁第7頁/共47頁第8頁/共47頁第9頁/共47頁第10頁/共47頁說不定他明天會(huì)回家。說不定他明天會(huì)回家。第11頁/共47頁第12頁/共47頁from me. You will do as I told you.第13頁/共47頁（表請(qǐng)求）（表意愿）第14頁/共47頁第15頁/共47頁第16頁/共47頁第17頁/共47頁harder.He shall have the book when I finish reading.第1

3、8頁/共47頁第19頁/共47頁1.must用于一般問句中,肯定回答用must否定式用 neednt或dont have to，做 “不必”, mustnt表示“禁止，不允許” MustIfinishallassignmentsatatime?Yes,youmust.No,youneednt.第20頁/共47頁I dont like this TV set. We must buy a new one. There was no more bus. They had to walk home.2.表示“必須”這個(gè)意思時(shí)，must 和have to 稍有區(qū)別。must著重說明主觀看法，have

4、to 強(qiáng)調(diào)客觀需要。另外，have to 能用于更多時(shí)態(tài)。 第21頁/共47頁Youmustbethenewteacher.Hemustbejoking.Thereisnobodyhere.Theymusthaveallgonehome.3.must表示對(duì)某人某事的猜測(cè), 作“準(zhǔn)是”, “一定” , 一般用于肯定句中。對(duì)過去發(fā)生的事情作肯定判斷用must have done 第22頁/共47頁Hemustcomeandworryherwithquestion,justwhenshewasbusycookingthedinner.4. must表示“偏要, 硬要”, 指做令人不快的事情第23頁/

5、共47頁 can / could, may / might, should和must都可表示肯定的推測(cè)。 must表示比較肯定的語氣; can / could表示客觀可能性; should表示確定或可能有的未來或期待; may表示推測(cè)時(shí)，其語氣不肯定；might語氣更弱，表示某事實(shí)際發(fā)生的可能性。如：第24頁/共47頁I think the old woman must be a nice person.The rescue team should arrive by 5 oclock this afternoon.Advertisements can be quite dangerous.T

6、he newcomer may be dismissed by the company.第25頁/共47頁could, might, would, should都可表示委婉語氣。如:I wonder if you could let me use your cell phone. Might I know your telephone number?第26頁/共47頁 2. A: _ Xiao Feng find the origin of Easter from that book? B: No, he _.Wouldd like to ( go with you on Saturday)C

7、ouldcouldnt find itExercise 第27頁/共47頁3. A: _ I go with my friend to the harvest festival? B: Yes, you _ _.should study scienceMay may go (with your shouldfriends)第28頁/共47頁cant play the role of theCanprince第29頁/共47頁 I think Ill give Bob a ring later in the week. You _. You havent been in touch with h

8、im for ages. A. will B. may C. have to D. shouldD 練習(xí)坊I. Choose the correct answer.第30頁/共47頁2. John, look at the time. _ you play the piano at such a late hour? A. Must B. Can C. May D. ShouldA 第31頁/共47頁3. There _ any difficulty about passing the road test since you have practiced a lot in the drivin

9、g school. A. mustnt be B. shant have C. shouldnt be D. neednt haveC 第32頁/共47頁4. The World Wide Web is sometimes jokingly called the World Wide Wait because it _ be very slow. A. Should B. must C. will D. can5. Helen _ go on the trip with us, but she isnt quite sure yet. A. shall B. must C. may D. ca

10、nD C 第33頁/共47頁6. Someone is knocking at the door. _ it be Venis? No, it _ be her; she left for New York this morning. A. Can; mustnt B. Might; cant C. May; doesnt D. Can; cantD 第34頁/共47頁7. Mike promised his doctor he _ not drink, and he has never drunk ever since. A. might B. should C. could D. woul

11、dD 第35頁/共47頁8. Is there a movie on in the cinema tonight? There _ be. I will phone the cinema and find it out. A. might B. should C. can D. mustA 第36頁/共47頁9. When I was studying at Beijing University, I _ take a walk along the lake every evening. A. will B. would C. could D. shallB第37頁/共47頁10. Mr Br

12、own, many students want to see you. _ they wait here or outside? A. Shall B. Will C. Can D. WouldA 第38頁/共47頁can; couldWhen I was young I _ climb any tree in the forest.Learning a language _ be a real challenge.couldcanII. 選用正確的情態(tài)動(dòng)詞填空。第39頁/共47頁may; mightI asked if I _ go home half an hour earlier tod

13、ay.There _ not be enough money to pay for the repairs.mightmay / might第40頁/共47頁will; wouldWhen he got older, he _ never do his homework.Nancy _ keep talking unless you tell her to shut up.wouldwill第41頁/共47頁shall; shouldBy now, they _ already be in Dubai.I _ be replaced by someone from the New York o

14、ffice.shouldshall第42頁/共47頁must; cantYou _ have stayed up. You look so tired.You _ be 45! I thought you were about 25 years old.mustcant第43頁/共47頁Harvest and Thanksgiving festivals canbe very happy events. (P2)考點(diǎn) 情態(tài)動(dòng)詞can的用法?？祭? It is usually warm in my hometown in March, but it _ be rather cold sometimes. (福建 2008)A. must B. can C. should D. would考點(diǎn)點(diǎn)撥 考例回顧第44頁/共47頁選B。can表示“可能”，意為“有時(shí)天氣可能會(huì)相當(dāng)冷”。must必須、肯定；s