高二英語Sporting events教案
you may drive the car.might i use your pen? no，you mustn’t.
(用may i…征詢對方許可在文體上比較正式，在口氣上比較客氣。在日常用語中用can。)
2.表示推測、可能(疑問句不能用于此意) he may be very busy now.
3.用于析使句中表示祝愿。may you succeed ！
4.表示請求或規(guī)勸。you might pay more attention to me.
5.“may(might)+have+過去分詞”表示對過去發(fā)生的行為的推測。例如：
he may not have finished the work.
6.may/might的其他用法：①may not表示一種禮貌的“不可”。如：
you may not leave the thing half done.
②.might可表示忠告，責(zé)備。如：
yon have broken two dishes.you might try to be more careful.
③.may well +原形， 理所當(dāng)然
you may well say so.你當(dāng)然可以這樣講。
④.may/might as well=had better 最好 如：we may as well stay where we are.我們最好是留在原處。 if that is the case, we may as well try.
⑤.may/might as well+原形+as+原形 與其……不如； 最好……不要；如：you might as well throw your money away as lend it to him.你要借給他錢,不如把錢扔了。
peter ___come with us tonight, but he isn't very sure yet.
a. must b. may c. can d. will
四。 have to和must
1. must表示必須，強調(diào)的是一種主觀看法。也表示責(zé)任或義務(wù).而have to表示必須時強調(diào)的是客觀需要。have to可以用在更多的時態(tài)中。
my brother was very ill, so i had to call the doctor in the middle of the night. 我弟弟病得很厲害，我只得半夜里把醫(yī)生請來。(客觀上需要做這件事)
he said that they must work hard.他說他們必須努力工作.（主觀上要做這件事） you must obey the rules.(責(zé)任或義務(wù))
you will have to do it again.你將不得不再做一次。
回答must引出的問句時.如果是否定的回答.不能用mustn’t.而要用needn’t或don’t have to。如： must we hand in our exercise books today?
yes.you must.(no.you don’t have to.)
2. “must be+表語”的結(jié)構(gòu)表示推測。它的否定或疑問形式用can代替must。
this must be your pen.
3.must+have+過去分詞”的結(jié)構(gòu)常用在肯定句中.表示對過去發(fā)生的行為的推測。它的否定或疑問形式用can代替must。
he must have been to shanghai.
4 .must一般只表現(xiàn)在，have則有更多的時態(tài)形式。
5.二者的否定意義不大相同.mustn’t表“禁止”, don’t have to(=needn’t)表沒有必要。例如： yon mustn’t go.你可不要去。
you don’t have to go.你不必去。
6.詢問對方的意愿時應(yīng)用must。例如： must i clean all the room?
五. will和would
1. 表示請求、建議等，would 比will委婉客氣. would you pass me the salt?
2.表示意志、愿望和決心。i will never do that again.
they asked us if we would do that again.
3.表示習(xí)慣動作。 fish will die without water.