【正文】 r.(肯定句)② Does he need to know it?=Need he know it? ③ She didn?t need to go.=She needn?t go.⑶ 按句型背：need doing=need to be done ① The door needs painting.=The door needs to be painted.② The old man needed looking after.= The old man needed to be looked ．情態(tài)動詞dare的用法⑴ dare 表示“敢” 作為情態(tài)動詞，通常用于否定句，疑問句或條件句中。⑵ 在疑問句中，shall 用來征詢對方意見或請求指示，用于一，三．．．．．．．．．．．人稱。指的是現(xiàn)在時間。① He?ll talk for hours if you give him the chance.② Fish will die out of ⑴ would是will的過去式，表示過去時間的“意志”，“愿望”用于各種人稱。（一人稱用 shall是將來時）① You shall do as I say.(命令)② Tell him that he shall have the book tomorrow.（允諾）③ You shall have whatever you want.(諾言)(我答應(yīng))你要什么我給你什么。作為情態(tài)動詞，通常用在否定句和疑問句中。May you you be happy every day.㈡ 可能性用法“可能性”① 疑問句：只能用canWho can it be ?② 否定句：cannot(can?t)“不可能 It cannot be “可能性”① 否定句：may not“可能不”It may not be Jenny.② 肯定句：“大概”，“也許”，“可能” It may be “可能性”，只能用于肯定句，表推測：“一定是”，“準(zhǔn)是”，“必是”，“必定”。(許可)，許可May I e in?Yes, you may./Sure, e on , you mustn?t./No, you can?, you?d better we finish the exercise today?Yes, you , you needn?t./No, you don?t have 需要，必需Need you go now?=Must you go now?Yes, I , I , I needn?, I needn?t.(need作為情態(tài)動詞，通常用在否定句和疑問句中。 dare you say I’m unfair? daren’t speak English before such a crowd, dare he? we dared not go there that day，we couldn’t get the beautiful )need 作情態(tài)動詞用時, 常用于疑問句、否定句。Might/ May I smoke in this room?No, you mustn’Yes, you can.(No, you can’t / mustn’t.)用May I...?征徇對方許可時比較正式和客氣，而用Can I...?在口語中更常見。如：He was able to go to the party yesterday evening in spite of the heavy )表示請求和允許。(5)must 用于表示“禁止”，“不準(zhǔn)”： must not be parked here.(must not表示不許可)此地不準(zhǔn)停車。 mankind must die.(表示必然會發(fā)生的事)所有的人一定會死的。 may snow later this afternoon.(表示預(yù)測)今天下午可能會下雪。如：Dare he tell them what he knows? 他敢告訴他們所知道的情況嗎?I daren’t ask her – will you do it for me? 我可不敢問她，你能幫我問問嗎?(2)dare 作為實(shí)義動詞，此時有人稱、數(shù)及時態(tài)的變化。(2).need 還可以作實(shí)義動詞，此時有人稱、數(shù)和時態(tài)的變化，如果是人作主語后邊多接動詞不定式。(3)對must引導(dǎo)的疑問句，肯定回答為must，否定回答為needn’t 或 don’t have ：—Must I finish my homework?我現(xiàn)在必須完成作業(yè)嗎?—No, you needn’，你不必?？赡苄缘陀趍ay。如：He could write poems when he was 。如：She can swim fast, but I can’，但我不能。could 。如： You needn39。如： This will be the book you will have arrived by ．will表示習(xí)慣、請求，固有性質(zhì)等。，或“情態(tài)動詞 + 動詞原形”。 表允許，請求表示請求或者允許時，兩者均可用，但用could 語氣更委婉更為禮貌些； Can [Could] I e in?（允許）Can（could）you help me？（請求）若是自己允許別人做某事，一般只用 can，而不用 could。：讓學(xué)生在學(xué)習(xí)中情態(tài)動詞過程中體驗英語的生動趣味性，引導(dǎo)學(xué)生提高對英語學(xué)習(xí)的求知欲。If itshould rain(=Should it rain)tomorrow, I would stay at ，我就待在家里。2．should(not)/ ought(not)to在中表示根據(jù)常規(guī)或常識推測，表示“某事應(yīng)該或不應(yīng)該發(fā)生”，語氣比must或can’t / couldn’t稍弱。be able to 有多種形式的變化。He can’t be in the reading saw him on the playground just ，我剛看到他在操場上。They must be waiting for 。She ought to know his telephone 。You should listen to the doctor39。I will do anything for you will read the book, I’ll lend it to ，用于疑問句。She may not know about am afraid they might not agree with might be having a meeting, but I’m not （主觀意志）We must do everything we can to help mustn’t talk to her like we hand in our exercise books now?No, you needn’t./ No, you don’t have ，意為“想必、準(zhǔn)是、一定”等，只用于肯定句。Two eyes can see more than 。）You need not have ：NEED HAVE DONE的形式較為少見Need you have scolded him so severely for his bad work? He had done his best.（否定意味）He need have gone and sent that letter in person.（實(shí)際上沒有做）四、NEED與推測NEEDN’T表示“不一定”。以下的各種用法也遵循這條規(guī)則。）NEED可用于：)否定句含not/hardly/never/nobody等詞語。1)過去時間由一過去時間狀語表示 He need not e )過去時間由另一過去時動詞表示。在肯定句、過去時和將來時的句子中，一般使用作為實(shí)義動詞的NEED。Where can(could)they have gone to?He can’t(couldn’t)be over can you be so careless?(肯定句把握較?。环穸ň鋷缀鯙?00%把握)The temperature can fall to 10℃.You can’t be (might)1．表允許，might是may的過去式。He must be looks so must have a lot of money, for she drives a ，用于第一、第三人稱疑問句。Fish will die out of door won’t 。，意為“想必一定、照說應(yīng)該、估計”等。He used to （現(xiàn)在不抽了）。You may have read about it in the 。⑶對過去發(fā)生的事情的推測：can/could not + have +過去分詞不可能，想必不會做過某事may/might not + have +過去分詞可能沒干過某事He can’t have finished the work so 。could 是can的過去式, 表示過去有能力及過去存在的可能性；用于疑問句表示委婉地提出問題。另外，must與have to都可以表示“必須”這一含義。四周的花兒，紫的，黃的，白的，紅的，競相開放。為什么說情態(tài)動詞不能單獨(dú)作謂語呢？謂語是對主語動作或狀態(tài)的陳述或說明，指出“做什么”“是什么”或是“怎么樣”情態(tài)動詞用在行為動詞前，表示說話人對這一動作或狀態(tài)的看法或主觀設(shè)想。She could be at [2] must / may / might的用法這三個詞常用于推測，在推測方面的用法分為四種情況。[3] shall的用法 （“好不好”）Shall we go now? 、警告、命令或根據(jù)規(guī)定有義務(wù)做 You shall leave at once!(威脅、警告)You shall clean theroom，it is your task.（義務(wù)，責(zé)任）、法令、預(yù)言：“必須” 用于所有人稱 Every paasenger shall wait in a line.[4] should /ought to的用法 注：情態(tài)動詞 should /ought to表推測時，意為“想必會，理應(yīng)??” ，義務(wù)或要求，有時表示勸告：You ought to /should pay more attention to what your lawyer ，是“(按理說)應(yīng)該”之意 肯定的語氣沒有must用于推測時強(qiáng) This pen ought to /should be “have +過去分詞”連用時，則又可構(gòu)成虛擬語氣意為 例如：should have done 本應(yīng)該做某事而沒有做 Should’nt have done 本不應(yīng)該做某事卻做了。如： How dare you say I39。我真的必須現(xiàn)在就走。can “能力”may“許可”，must“責(zé)任”或“義務(wù)”。would many mistakes in your homework!You more be to be have been4．Her brotherbe at home now, because he was seen playing basketball in the stadium just ’t ’t’t 39。如：You can use my 。(注意回答)：(1).表示請求、許可，比can 正式，如：May I borrow your bike? 我可以借你的自行車嗎?You may go home 。通常是用may +主+V 例如：May you have a good 。注意其反意問句的構(gòu)成形式：當(dāng)must表示肯定的判斷、推測時，其反意疑問句要用實(shí)際問句的助動詞來構(gòu)成。如果是物作主語，一般用need doing 與 need to be done這種情況下應(yīng)注意兩點(diǎn)：①.主動形式的動名詞doing具有被動的含義。如：Do you dare tell her what