Unit1語法情態(tài)動詞學(xué)案

1、book 3-unit 1 grammar: modal verbs(教師版)step1. listen to an english song and fill in the blank with modal verbs.19 i want to be with you - bonzo dog band(1)there are things that be donethat are not yet begunthings that i dowhen i want to be with youalthough were far apartyoure with me in my heartno o

2、ne else doi just want to be with you(2)i want to be with you you hear me?i need you near mei want to be with youi need you near me, my love(3)the two of us are onemother of my sonno one else doi just want to be with you(4)i want to be with you you hear me?i need you near mei want to be with youi nee

3、d you near me, my lovestep2. explanation of the use of modal verbs一、情態(tài)動詞的基本用法情態(tài)動詞表示說話人的預(yù)期或情緒，如可能、意愿、猜測、義務(wù)、需要等。情態(tài)動詞有以下特征：1、情態(tài)動詞有一定的詞義，但不能 ，必須與其后的 構(gòu)成謂語；2、情態(tài)動詞沒有 的變化，即不隨主語的不同而變化；3、情態(tài)動詞除ought和have外，后面只能接 ；4、情態(tài)動詞沒有非謂語形式，即沒有不定式、分詞等形式。5、但有些情態(tài)動詞也有一般式和過去式的變化，如may/ might, will/ would, shall/ should 等。情態(tài)動詞的“時態(tài)

4、”形式并不是時間區(qū)別的主要標(biāo)志，不少情況下，情態(tài)動詞的現(xiàn)在形式和過去形式都可以用來表示現(xiàn)在時間、過去時間和將來時間。e.g., 1）he cant finish his essay by this time. 現(xiàn)在他不可能寫完論文。2）you may use my dictionary. 你可以用我的字典。3）we must study hard and make progress every day. 我們必須好好學(xué)習(xí)，天天向上。二、用法歸納1. can and couldlook at the sentences and sum up the usage of the modal verb

5、s.1）can you speak japanese? 2）he cant be at home now.3）can/ could i have a look? 4) how can you be so rude?5）can you lift this heavy box? 6）can this be true?7) this cant be done by him. 8) it could be very interesting to go out for a drive.  歸納1：can and could (1)表示 , ，常譯為“能，會”如例句 。(2)表示對現(xiàn)在

6、或過去情況的 時，只用在否定句或疑問句中，如例句 。 (3) 表示 （在陳述句中屬于“ ”，在疑問句中屬于“ ”），常譯為“可以”, 如例句 。 (4) 用于否定句、疑問句中，表示 等, 如例句 。 (5) 用于肯定的陳述句中，表示理論上的可能性，也可表示一時的情況，如例句 。could可表示 ，多用于過去，也可指現(xiàn)在，通常表示虛擬或作為 的委婉形式。e.g., can/ could i use your cell phone? 我可以用用你的手機(jī)嗎？2. may and mightlook at the sentences and sum up the usage of the modal

7、verbs.1) it may be true. 2) may i ask you a question?3) may you be happy all your life. 4) may you succeed!5) he may /might be very busy now. 6) your mother may /might not know the truth.歸納2：may and might (1)表示 ，常用于肯定和否定句中, 如例句 。(2) 表示 （在陳述句中屬于“ ”，在疑問句中屬于“ ”），常譯成“可以”， 如例句 。表示“ ”時，might 比may語氣更委婉，類似c

8、ould/與can。對其一般疑問句的肯定回答可用may 或can, 但要作出否定回答時要用 。mustnt 表示“不可以，不許” 。(3) 用于祈使句，表示 ，如例句 。(4) might 比 may 語氣更委婉may / might表示 時，表示對現(xiàn)在或?qū)硪l(fā)生的事情把握不大，如例句 。might / may have done表示對過去發(fā)生的動作進(jìn)行的 。e.g., 1) he may have gone to the clinic.他可能去醫(yī)務(wù)室了。 2)he might have read about the news in the newspaper.他可能已經(jīng)從報紙上知道這個消息

9、了。3. will and would look at the sentences and sum up the usage of the modal verbs.1) will / would you please post the letter for me? 2) go where you will.3) she asked if i would go with them. 4) oil will float on water.5) ask him. he will know. 6) when he was a child, he would often go skiing.7) eve

10、ry family would have some sort of trouble. 歸納3: will and would (1)表示意愿，will表示 ，would表示 , 如例句 。(2) 表示 ，主要用于第二人稱的疑問句中，will和would均可用，would此時并不表過去，而表示 , 如例句1 。(3) 表示 , will表示現(xiàn)在的習(xí)慣，would表示過去的習(xí)慣, 如例句 。(4) 表示 , will用于談?wù)摤F(xiàn)在，would可用于談?wù)撨^去，也可用于談?wù)摤F(xiàn)在(語氣較委婉), 如例句 。 4. shall and shouldlook at the sentences and sum

11、up the usage of the modal verbs.1) you shall do as i say. 2) shall i open the window for you？3) nothing shall stop me doing it. 4) young people should learn how to use computers.5) tell him that he shall have the book tomorrow. 6) shall he fetch some water for you？7) they left at 5:30. they should g

12、et there now. 8) you should have told her the truth earlier.歸納4: shall and should (1) 在陳述句中,shall用于二、三人稱表示 、 、 、 等，如例句 。(2) 在疑問句中, 用于一、三人稱，用來表示 。如例句 。(3) should常表示 、 、 。如例句 。(4) should have done表示 , 意為“本應(yīng)該但”, 如例句 。(5) should用于 時, 表“應(yīng)該，很可能”, 如例句 。5. must and cantlook at the sentences and sum up the u

13、sage of the modal verbs.1) he must be reading the novel now. 2) you mustnt smoke here.3) it cant be true. 4) you must go to see the film.5) you must hand in your homework today. 6) it is all wet on the ground. it must have rained last.7) he cant have been at home last night, for the light wasnt on.歸

14、納5: must and cant(1)must 可以表示 。 “must + 動詞原形”表示現(xiàn)在或經(jīng)常發(fā)生的情況作 。作此意講時，must的否定形式不是 , 而是 ， 如例句 。 (2)mustnt 表示 “不允許，禁止”， 如例句 。(3) must表示 ， 多處于義務(wù)、責(zé)任或強(qiáng)制命令, 如例句 。must 表示“必須”，用于一般疑問句中，肯定回答用 , 否定回答用 . e.g., -must we hand in our homework today？ 我們今天必須交作業(yè)嗎？ - yes, you must. 是的，你們必須。/ no, you neednt / dont have to

15、. 不， 你們不必。(4) must表示 , 如例句4 。(5) must have done 表示對 ，如例句 。cant have done 表示對 ，如例句 。step 3. 鞏固練習(xí)(1) 從每題所給的a、b、c、d四個選項(xiàng)中,選出可以填入空白處的最佳選項(xiàng)。1) you neednt take an umbrella. it isnt going to rain. well, i dont know. it _ do. a. might b. need c. would d. should2) since nobody gave him any help, he _ have done

16、 the research on his own. a. can b. must c. would d. need3) he _ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it. a. wouldnt b. shouldnt c. couldnt d. mustnt4) _ you interrupt now? cant you see im on the phone? sorry sir, but its urgent. a. can b. should c.

17、 must d. would5) one of our rules is that every student _ wear school uniform while at school. a. might b. could c. shall d. will6) i got close enough to hear them speaking chinese, and i said “ni hao,” just as i _ do in china. a. must b. might c. can d. should7) i _ thank you too much for all your

18、help to my son while we were away from home. a. wont b. cant c. can d. will 8) shall i inform him of the change of the schedule right now? i am afraid you _, in case he comes late for the meeting. a. will b. must c. may d. can9). i dont really like james. why did you invite him? dont worry. he come.

19、 he said he wasnt certain what his plans were. a. must not b. need not c. would not d. might not10) jack described his father, who _ a brave boy many years ago, as a strong willed man. a. would be b. would have been c. must be d. must have been keys: 1-5: a b c c c 6-10: b b b d d(2) exercise 2 on p

20、age 5 in your textbook.step 4. homework (1) 從句子后面的括號中選擇適當(dāng)?shù)那閼B(tài)動詞填空。1. you _ help him because you are his best friend. (could, should)2. he _ sit like that for hours when he was in trouble. (will, would)3. she _ drive a car, but sometimes she goes to school by bus. (can, could)4. lisa said there _ be a

21、 few magazines in that library, but she was not sure yet. (may, might)5. does jack go to work by bus? he should, but he _ not. he likes to go to work on foot. (may, can)6. you _ be tired. you have been working for only one hour. (mustnt, cant)7. _ i put away your notebook and uniform for you? (shall

22、, should) yes. thank you. 8. mary _ have been well prepared for the exam, for she got full marks in it. (may, must)(2) 從每題所給的a、b、c、d四個選項(xiàng)中,選出可以填入空白處的最佳選項(xiàng)。1)as he had heart attack, he was told that he _ continue the work.a. needn't b. may not c. mustn't d. can't2) an englishman who _ not speak italian was once traveling in ita