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1、含情態(tài)動(dòng)詞must的反義疑問句陳述部分有must,且表示"必須"時(shí),附加疑問句部分用mustn't,如果表示"必要"則用needn't。?????陳述部分中是mustn't表示"禁止"時(shí),附加疑問句部分用must。????陳述部分中的must表示"一定"、"想必"等推測意義時(shí),附加疑問句部分而是根據(jù)陳述部分的謂語動(dòng)詞或其助動(dòng)詞來定。Theymustcleanthefloor,mustn'tthey/needn'tthey?他們必須擦地板,是不是?Wemuststayathome,mustn'twe?我們必須留在家里,是不是?Wemustn'tbelate
2、,must/maywe?我們不許遲到,是不是?Theymustworkhard,mustn'tthey?(必須)Theymusttakemedicallessons,needn'tthey?(必要)Hemustbelyingtome,_____?A.mustn'tbe?????B.mustbe?????C.isn'tbe?????D.isbe"他肯定在對我說謊。"mustbedoing是對正在進(jìn)行的事情的推斷。還有musthavedone是對過去情況的肯定推斷。must這種用法的反意疑問句不用must提問。推斷用法:Hemustbelyingtome.陳
3、述用法:Heislyingtome.陳述用法反意疑問句:Heislyingtome,isn'the?推斷用法反意疑問句:Hemustbelyingtome,isn'the?推斷用法:Hemusthavebeenabroad.陳述用法:Hehasbeenabroad.陳述用法反意疑問句:Hehasbeenabroad,hasn'the?推斷用法反意疑問句:Hemusthavebeenabroad,hasn'the?推斷用法:Hemusthavegoneswimmingyesterday.陳述用法:Hewentswimmingyesterday.陳述用法反意
4、疑問句:Hewentswimmingyesterday,didn'the?推斷用法反意疑問句:Hemusthavegoneswimmingyesterday,didn'the?Hemustbeavisitor,isn'the?(對現(xiàn)在情況的推測)Youmusthaveseenhimathisbirthdaypartyyesterday,didn'tyou?(對過去情況的推測,且句中有過去的時(shí)間狀語)Youmusthaveseenhimathisbirthdayparty,haven'tyou?(強(qiáng)調(diào)動(dòng)作的完成)1帶haveto時(shí),附加疑問用do或have
5、的相應(yīng)形式,用do更常見。Youdon’thavetogotoschoolonSundays,doyou?Wehavetoworktoday,don’twe?(haven’twe?)2帶must時(shí)A表示“必須”,附加疑問部分用mustn’tWemustworkhard,mustn’twe?B表示“有必要”時(shí),附加疑問部分用needn’t.Theteachermustshowconcernforeachpupil,needn’the?C表示“推測”時(shí),附加疑問部分要與陳述部分的謂語動(dòng)詞相呼應(yīng)。Hemustbeateacher,isn’the?Dmust+h
6、ave+done是對過去情況的推測,當(dāng)陳述部分沒有明確的表示過去的時(shí)間狀語時(shí),附加疑問要用have的相應(yīng)形式;當(dāng)陳述部分有明確的過去時(shí)間狀語時(shí),附加疑問要用過去時(shí)。Youmusthavelivedhereforalongtime,haven’tyou?Youmusthaveseenhimyesterday,didn’tyou?E當(dāng)陳述部分是mustnot,表示“一定不要”、“禁止”時(shí),附加疑問除用must外,還可以用may.Imustnottellhim,mustI?(mayI?)3帶usedto時(shí),附加疑問用usedn’t或didn’t.但口語中傾向于
7、后者。Thereusedtobeanappletreeinthegarden,didn’tthere?(usedn’tthere?)4帶need時(shí),附加疑問用do或need,應(yīng)該與陳述部分need用法相呼應(yīng)。Ineedn’ttellyoutheanswer,needI?Youneedtobuyabetterdictionary,don’tyou?5帶oughtto時(shí),附加疑問用ought.,但在美國英語中用shouldWeoughttohelpeachother,oughtn’twe?/shouldn’twe?