高一英語 Unit3 Celebration導(dǎo)學(xué)案

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高一英語 Unit3 Celebration導(dǎo)學(xué)案
Lesson3 Grammar
Tips:All things in their being are good for something.(天生我材必有用)
Learning aim: learn the use of the modal verbs have to /not have to , can/can’t, ought to /ought not to
Learning methods: observe----learn-----summarize------use
Learning steps:
StepI: Underline all the following words in the texts and translate them.
have to , don’t have to, ought to, ought not to, can’t,can
StepII: atch the verbs to their meanings.(A級)
1 have to a) not necessary
2 don’t have to b) necessary
3 can c) not allowed/not possible
4 can’t d) allowed/ possible
5 ought to e) not advisable
6 ought not to f) advisable
StepIII:Transtrate the following sentences.(B級)
1.1)I can’t go out now, I have to look after my baby .
______________________________________
2)I must find a job,my parents can’t support me any longer.
_____________________________________________
3)— ust we hand in our exercise books today?
— Yes, you must. (No, you don’t have to/need’t.)
________________________________________________
總結(jié):must 和have to表示___________,但must表示___________觀,have to表示_________觀(如例句1,2所示)
讀一讀,記一記:
must與have to有下列幾點(diǎn)不同:
  ① must表示的是說話人的主觀看法,而have to則往往強(qiáng)調(diào)客觀需要。
   The play is not interesting. I really must go no
   I had to work when I was your age.
 、 must與have to 的時(shí)態(tài)差別: have有時(shí)態(tài)的變化,如三單has, 過去時(shí)had ,表示 客觀上的不得不,能與所有 時(shí)態(tài)一起。must為情態(tài)動詞, 無時(shí)態(tài)的變化 , 表示主觀上的必須, 需要。
  ③ 二者的否定意義不大相同。如:
   You mustn't go. 你可不要去。
   You don't have to go. 你不必去。
 、 詢問對方的意愿時(shí)應(yīng)用must。如:
   ust I clean all the room?
2 1)Can you speak English?
__________________________________________________ can表示能力(如體力和腦力方面),意為“__________”等can表示能力時(shí),還可用be able to代替。如:
I'll not be able to come this afternoon.
2)表示請求或允許,多用在口語中,意為“__________”等。
—Can/Could I go now?
—Yes, you can.(回答語中不能用could)
3) 表示驚異、懷疑、不相信的態(tài)度。(主要用在否定句、疑問句或驚嘆句中)
  Can this be true? ______________________
  How can you be so careless! ___________________
  This cannot be done by him. __________________
4)在變否定句時(shí),直接在后加上“not”,可縮寫成_________或___________, 但不能寫成cann’t。例如:
(變成否定句) He can swim. → _______________________
3 ought意思是______________后面跟帶有 to 的動詞不定式否定式為_________________。(C級)
You ought to read these books if you want to know how to repair the motorcar.
____________________________________________
You ought to bring the child here.
_____________________________________________
You ought not to walk alone at night. _____________________________________________
注意: ought to和should的區(qū)別:
  1.ought to語氣略強(qiáng)。 2.should較常用。
  3.ought to在美國英語中用的很少,而should卻相當(dāng)常用。
4.ought to屬正式用語。
練一練:(C級)
1The man in the office____________be r. Black because he went home
just no
A. mustn’t B. may not C. can’t D. needn’t
2---Can you go surfing with us this afternoon?
----I’d like to , but I ________ look after my sister at home , because my mother is ill.
A. need B. must C. have to D. should
3----Can I take this book out of the reading room?
------______. Please read it here.
A. CertainlyB.No, you needn’t
C.No, you mustn’t D.No, you may not
4 ----_____ you help me answer the telephone
----O.
A. Can B. Should C. Need D. ust
5 Tom is young but he ____ fly a kite by himself.
A. can B. may C. Need D. must
6 -----Could I cross the street here?
 -----Of course you _____.
 A.could B.can C.are able to D.will
7-----_______ we attend the party?
-----No, you needn’t. You are free.
A.ust B. Can C.ay D. Shall
StepIII Do the exercises on page 82----1.2.
the lowest grade
"Professor, I did the best I could on this test. I really don't think I deserve a zero.""Neither do I. But that's the lowest grade I'm allowed to give."
學(xué)生:“教授先生,我這次考試已經(jīng)竭盡全力了.我真的覺得我不應(yīng)該得零蛋.”老師:“我也是.但是這已經(jīng)是我能給的最低分了!”
小結(jié)反思:這幾個(gè)情態(tài)動詞的用法你掌握了嗎?
_____________________________________________



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