9 教案（情態(tài)動(dòng)詞)

1、.授 課 教 案學(xué)員姓名： 授課老師：楊老師所授科目：_英語_ _學(xué)員年級： 上課時(shí)間：_年_月_日_時(shí)_分至_時(shí)_分共_小時(shí)教學(xué)標(biāo)題中考綜合復(fù)習(xí)教學(xué)目的 詞匯，語法，教材系統(tǒng)復(fù)習(xí)教學(xué)重難點(diǎn)中考考點(diǎn)的學(xué)習(xí)及應(yīng)用語法 考考點(diǎn) 九、情態(tài)動(dòng)詞一情態(tài)動(dòng)詞的用法1. can 用法1表示才能，與be able to同義，但can只用于如今時(shí)和過去時(shí)，be able to可用于各種時(shí)態(tài)。Two eyes can see more than one. 注：Can you ? Yes, I can / No,I cant.2.表示允許、懇求用could比can 語氣更加委婉客氣，常用于could I /you

2、.?句型中，假設(shè)表示同意時(shí)，用can答復(fù)而不用could .Could I borrow the book ? No, you cant .3。表示推測 “可能常用于否認(rèn)句或疑問句中。cant表示一定不是It cant be true .Can it be true ?2. may 用法1表允許，懇求= can 表示答應(yīng)或征求對方的答應(yīng)，常于第一人稱連用。注：May I .? Yes ,you may No, you cant / mustnt .在答復(fù)以may引起的問句時(shí)，多防止用這個(gè)詞，而用其它方式，如Yes, please. / Certainly.2表推測，可能、也許。常用于肯定句中。

3、Maybe he knows the news .=He _ _ the news. 3. must1表示義務(wù)。意為“必須主觀意志。We must do everything step by step. 注：Must I .? Yes, you must / No,you needntdont have to .-Must we hand in our exercisebooks now? -No, you neednt. / No, you dont have to. 2mustnt 表制止、不允許。 You mustnt talk to her like that.3表示揣測。意為“想必、

4、準(zhǔn)是、一定等，只用于肯定句。否認(rèn)、疑問句中must改為can .He must be ill. He looks so pale. Shes wearing a diamond necklace. She must have a lot of money. 注：must表推測時(shí)，其反義疑問句與must后面的動(dòng)詞一致。There must be something wrong ,_ _? 4.need的用法 need既可用作情態(tài)動(dòng)詞，也可用作實(shí)義動(dòng)詞。用作情態(tài)動(dòng)詞時(shí)，主要否認(rèn)句或疑問句中。用作實(shí)義動(dòng)詞時(shí)，可用于各種句式。1.用作情態(tài)動(dòng)詞，用于否認(rèn)句和疑問句中。a.Need I .? Yes ,

5、you must / No, you neednt . Need we finish the work today ?Yes you _? A.need B.can C. may D.must b.need + do sth . 變否認(rèn)句：neednt do sth 變疑問句：Need sb do sth ?2.用作實(shí)義動(dòng)詞a.need + to do sth . We need _buy some school things . 變否認(rèn)句：dont /doesnt /didnt +need to do sth . 變疑問句：Do / Does /Did sb + need to sth ?

6、Yes , do/ does / did No, sb dont / doesnt /didnt .You dont need to do it yourself. b.當(dāng)主語是物時(shí)。Sth + need + doing sth = Sth +need to be done .The table needs painting . =The table needs _ _ _ .5.had better 的用法 1. had better + 動(dòng)詞原形 = Its best to do sth . You had better _ stay at home . = _ _ _ stay at h

7、ome . 2. Had better not +動(dòng)詞原形 We had better _not play the computer games .6.must 與have to 1.一般情況下，兩者可互換。 must = have to 2.must “必須，應(yīng)該表示說話人的主觀看法，即說話人認(rèn)為必須干某事。內(nèi)在原因 have to “必須，不得不強(qiáng)調(diào)客觀需要，即外界因素迫使某人不得不干某事。外界原因 I cant stop playing the computer games . For your health ,Im afraid you _. A.can B.may C.must D.

8、had to 二情態(tài)動(dòng)詞后跟完成式和進(jìn)展式的用法1.情態(tài)動(dòng)詞后跟完成式，表“本來應(yīng)該干某事，而實(shí)際上沒干I should have finished the work earlier. He isnt here. He must have missed the train. 2. 情態(tài)動(dòng)詞后跟進(jìn)展式，表示“想必正在，“可能正在，“應(yīng)當(dāng)正在等意。Its twelve oclock. They must be having lunch. They may be discussing this problem. He cant be telling the truth. She shouldnt be working like that. Shes still so