袁祥波 劉小紅
教學(xué)設(shè)計(jì):
教學(xué)課題:
情態(tài)動(dòng)詞can、could和be able to 的用法
教學(xué)目標(biāo):
知識(shí)目標(biāo):
1.復(fù)習(xí)并掌握can和be able to表能力的基本用法。
2.復(fù)習(xí)并掌握can和be able to表允許的基本用法。
3.復(fù)習(xí)并掌握can表推測(cè)的基本用法。
能力目標(biāo):
1.學(xué)會(huì)通過(guò)進(jìn)行練習(xí)而分析句型和單詞用法的能力。
2.學(xué)會(huì)通過(guò)分析問(wèn)題而進(jìn)行歸納總結(jié)的能力。
情感目標(biāo):
通過(guò)情態(tài)動(dòng)詞的復(fù)習(xí),知道在英語(yǔ)中表情感除了運(yùn)用感嘆句、祈使句等句式和語(yǔ)氣外,還可用情態(tài)動(dòng)詞表情感,這這種用法更直接、更清楚、更準(zhǔn)確。
教學(xué)重點(diǎn)與難點(diǎn):
重點(diǎn):can、could、be able to的基本用法
難點(diǎn):can和be able to的區(qū)別
【教學(xué)設(shè)備】多媒體
【教學(xué)課型】復(fù)習(xí)課
【教學(xué)課時(shí)】1課時(shí)
【教學(xué)方法】
1.先教后學(xué),當(dāng)堂訓(xùn)練。
2.啟發(fā)式教學(xué)
教學(xué)過(guò)程:
STEP1.預(yù)習(xí)導(dǎo)航
Ⅰ、用can和be able to 的正確形式填空
1. He drive but he doesnt have a car.
2. China send people into space before. But now we can. (2010年衡陽(yáng)中考題)
3. I used to stand on my head but I cant do it now.
4. Peter is a musician. He plays the violin and healso play the piano.
5. I cant see you on Friday but Imeet you on Saturday morning.
Ⅱ、選擇最佳答案:
1. Ask Tom about your problem. He might help you .
A. be able to B. can C. could
2. Mikes car broke down but luckily he ____repair it .
A. can B . could C. was able to
3. She didnt know where she _____find wild roses.
A. may B. could C. can
4.you pass me a pen? Id like to write down the telephone number.
A. Need B. Could C. must
5.——Could I borrow your dictionary?
——Yes, of course you _____.
A. might B. will C. can
Ⅲ、你能寫出我們初中階段學(xué)過(guò)的表能力、許可和表否定猜測(cè)的情態(tài)動(dòng)詞嗎?
1. cancantcannot
2. couldcouldnt
3. be able to
Ⅳ、寫出你的困惑
1. can 和 be able to 的區(qū)分。
2. cant 和 cannot 可以通用嗎?
3. can的否定式是 can not 嗎?
4. 用be able to 的情況。
自我評(píng)價(jià):( )()( )
STEP2.知識(shí)展現(xiàn)
1. can 和be able to 用于表示 能力 ,指有能力做某事,意為“能夠”。如:
He can speak German.
Can you finish the homework tonight?
We are able to overcome the difficulty.
Fish cannot live without water.
Will you be able to come tomorrow?
2. can 用于表示 請(qǐng)求 或 許可 ,意為“可否”“可以”。如:
Can you wait for me for a minute, please?
You cant step on the grass.
Perhaps I can help you.
3. could 的用法。
1)用于表示過(guò)去能夠。如:
When she was five, she could play the piano, she couldnt play the violin at all.
2)用于疑問(wèn)句表示請(qǐng)求,語(yǔ)氣較委婉,答語(yǔ)應(yīng)該用 can 不能用 could。如:
—— Could I use your mobile phone?—— Yes, you can.
3)在賓語(yǔ)從句中表委婉語(yǔ)氣的。如:
I wonder if I could come to your birthday party.
4)用于肯定句描述現(xiàn)在的情況,常用于委婉地陳述看法。如:
—— What shall we do this evening?
—— We could go to the cinema.
4.can 用于表示可能性(possibility)。
用于描述某事是否有可能發(fā)生,有驚訝、懷疑、不相信的語(yǔ)氣,常用在否定句、疑問(wèn)句或感嘆句中,意為“可能,會(huì)”。 如:
Can this be true?
This cannot be done by her.
5.cant be 或“cant +動(dòng)原” 用于否定句中,表推測(cè)某人或某事 不可能 出現(xiàn)或發(fā)生,意為“不可能……”。如:
—— Is the woman in white our manager?
—— It cant be her. She has just left for Shanghai.
你學(xué)懂了嗎?
自我評(píng)價(jià):( )()()
STEP3.鞏固與提高
1.根據(jù)句子意思需要,用can 、 be able to的正確形式完成句子。
1)——May I take this book out of the reading room?
—— No, you, please read it here.
2)Many of the starsbe seen because they are far away from us.
3)Manlive without air.
4)Ill see you after the lesson.
5)—— Ann, you say this word in Chinese?
——Yes, its easy.
6)He(不能) to sleep well for 10 years.
7)He solve that problem without any help in the past.
8)Mikes car broke down. But luckily he repair it.
9)——I wonder if you could lend me some money.
—— Yes, I . No, I m afraid not.
10)—— Is that woman Toms mother?
—— No, it . His mother is much taller.
自我評(píng)價(jià):( )( )( )
STEP4.合作探究
1. can和be able to的聯(lián)系與區(qū)別:
相同點(diǎn):表能力“能夠”,一般情況下可以互換。如:
I can am able to say some English.
區(qū)別點(diǎn):
1)can偏向于有生俱來(lái)的能力,而be able to 表示后天培養(yǎng)的能力,特別是通過(guò) 努力 要達(dá)到某種能力。如:Columbus was able to discover the new land after several years hard work.
2)can只有原形和過(guò)去式兩種時(shí)態(tài),be able to 還有將來(lái)時(shí)和完成時(shí)等多種時(shí)態(tài)。即can表將來(lái)時(shí),可用be able to代替,完成時(shí)可用have been able to代替。
3)用在過(guò)去時(shí)中,could經(jīng)常表示能夠做某事,事實(shí)上不一定去做,而waswere able to 則表示“過(guò)去做成了某事”。在否定句中兩者可通用。如:He could swim across the English Channel. But he didnt feel like it that day.
Yesterday I was able to get home before the heave rain.
2.千萬(wàn)注意沒(méi)有can able to 這種形式。
3. can的否定式是cant 或cannot. 不要寫成can not.
4. cannot和cant 有時(shí)可以互換。但表語(yǔ)氣堅(jiān)決時(shí)只能用cant.。例如表否定猜測(cè)說(shuō)“不可能”只能用cant。
自我評(píng)價(jià):( )()()
STEP 5.課堂小結(jié)
本課我的收獲:
我的疑難:
STEP6.作業(yè)布置(略)
教學(xué)反思:
面對(duì)教育改革和《英語(yǔ)課程標(biāo)準(zhǔn)》的實(shí)施,教師首先要轉(zhuǎn)變觀念,改進(jìn)教學(xué)法,正確處理教材。課堂教學(xué)要建立互動(dòng)的新型的師生關(guān)系,充分發(fā)揮學(xué)生的主體作用,提高課堂四十五分鐘的效益。
這堂課是在學(xué)生掌握了情態(tài)動(dòng)詞的基本特征:有一定的含義但不完整以及接動(dòng)原才能作謂語(yǔ)、無(wú)人稱和數(shù)的變化的基礎(chǔ)上,進(jìn)一步復(fù)習(xí)初中階段最基本的情態(tài)動(dòng)詞can和be able to 的知識(shí)和用法。這節(jié)課教學(xué)目標(biāo)明確,重點(diǎn)和要點(diǎn)突出,難點(diǎn)突破。在整個(gè)教學(xué)過(guò)程中設(shè)計(jì)了多個(gè)練習(xí)環(huán)節(jié),所有的知識(shí)點(diǎn)都是在學(xué)生完成練習(xí)的基礎(chǔ)上所生成的。由練習(xí)的操練達(dá)到知識(shí)點(diǎn)的歸納總結(jié),達(dá)到知識(shí)上升到能力的水平。設(shè)計(jì)的任務(wù)環(huán)環(huán)相扣,層層深入,促進(jìn)了師生間、生生間充分的交流與合作。