情态动词must,have+to.ppt

基本形式 MustHaveto 基本意义 特殊用法 表示推测 巩固练习 Musthaveto肯定式mustdo have has hadtodo 否定式mustnotdo don t doesn t didn thavetodo needn t don thaveto疑问式Must sb do Do does did sb haveto 由must引起的疑问句 肯定回答要用must或haveto 否定回答要用needn t或don thaveto 意思是 不必 MustIfinishthetaskrightnow Yes youmust Yes youhaveto No youneedn t No youdon thaveto Mustn t表示禁止 意思是 不准 Must和haveto的区别 Imustlearnanotherlanguage Ihavetolearnanotherlanguage Tommustshaveeverymorning Tomhastoshaveeverymorning 妈妈不在家 因此我不得不照看商店 Motherisout soIhavetolookaftertheshop 我要留下来照看店 Imustlookaftertheshop 你留下看店 Youmustlookaftertheshop 主观愿望 Iwantto 客观需要 我跳槽去了法资企业 军人服从命令 他长着一脸大黑胡子 必须 不得不 Must表示猜测 常用于肯定句中 意思为 一定是 必然 注意must表示推断或猜测的几种情况 你姐姐一定是这家医院的医生 表现在的猜测 Yoursistermustbeadoctorinthishospital 他此刻一定正在阅览室读报 表正在进行的猜测 Hemustbereadingnewspapersinthereadingroomnow 昨晚一定下雨了 因为地面上是湿的 表过去的猜测 Itmusthaverainedlastnight forthegroundiswet Haveto不能表推测 must bedoing must do must havedone Mike you playwithfire You burnyourself A won t can tB mustn t mayC don thaveto mustD havegotto shouldn t2 You seethedoctor Joe Youdon tlookverywell A mustB shallC mayD can3 MustIcleanthewindownow No you A mustn tB needn tC can tD maynot Consolidation A B B 4 Jack sill sothey changetheirplans A mustB needC havegottoD might5 Harryhasbeenreadingallday He betired A shouldB hasgottoC hastoD must C D 2005广东 2 I vetakensomeoneelse sgreensweaterbymistake It Harry s Healwayswearsgreen A mightbeB willbeC mustbeD hastobe 2004天津 1 Whoisthegirlstandingoverthere Well ifyou know hernameisMabel A mayB canC mustD shall A C Must表 偏要 偏偏 AfterIgavehimadvice hemustdotheopposite Ifyoumustleave tellmeandIwillletyougo Mustyoutroublemenow Policeman Theman Youmusthandinyourhomeworkontime I msorry Mymotherwasillyesterday soIhadtosendhertohospital Hemusthavedonesomethingwrong 反意疑问形式当陈述部分含有情态动词must时 我们便要分析一下must的含义 1 如果must作 一定 要 必须 讲 反意疑问句须用needn t Hemustworkhardatphysics needn the 2 而当must作推测意义 一定是 必定 讲时 反意疑问句则需根据must后的动词原形 选用相应的形式 Tommustbeathome isn the Tommusthavefinishedhishomework hasn the Notes mu