疑问词+to do.ppt

8BUnit4Grammar A Usingquestionwords to infinitives Howcanweformquestionwords to infinitives Questionwords whenwhathowwhowherewhich why todo 要说什么何时出发去参观什么地方如何使用电脑选择哪个照顾谁要学什么语言要走哪条路要借谁的书需要邀请多少学生需要准备多少水 whattosaywhentoleavewheretovisithowtousethecomputerwhichtochoosewhotolookafterwhatlanguagetolearnwhichwaytotakewhosebooktoborrowhowmanystudentstoinvitehowmuchwatertoprepare whatnottosay Canyoumakeupsentences 这本说明书告诉我们要做什么 不要做什么 这个孩子太小 他不知道什么地方该去什么地方不该去 我不知道向谁求助 他不知道该查哪本字典 v advise ask decide discuss findout forget know learn remember say show teach think understand wonderadj sure clear P55 whichtoreadwheretofindhowtotravelwhentohandinwhattowriteaboutwhotoaskfor Furtherthinking Suzywillexplainwhysherecommendsthisbook Milliehasdecidedwhattoread Danieldidnotsaywhototalktoaboutthisbook Simonforgotwhentomeethisfriends Kittycannotdecidewhichtochoosefirst Sandyiswonderingwheretoaskforhelp Amydoesnotknowhowtowritethereport Milliehasdecidedwhatshewillread Danieldidn tsaywhohewilltalktoaboutthisbook Simonforgotwhenhewouldmeethisfriends Kittycannotdecidewhichshewillchoosefirst Sandyiswonderingwhereshewillaskforhelp Amydoesn tknowhowshewillwritethereport Thisweek wewillhaveatriptothecountryside Beforegoingthere weneedtodosomepreparations Whatshouldwegetready Weshouldknowwhentoleaveforthecountryside 动词不定式 Todothatsortofthingisfoolish Iwanttoseeyouthisevening Allyouhavetodoistofinishitquickly Wefoundahousetolivein ShecameheretostudyEnglish Iwarnedthepatientnottoeatcoldwateraftertheoperation 主语 宾语 表语 定语 状语 宾补 作主语 Tomasteraforeignlanguageisreallyimportantnowadays Togiveupsmokingisright 1 当今掌握一门外语真的很重要 2 放弃吸烟是对的 It s adj todosth 作宾语 Freddidn thaveanymoney sohedecidedtolookforajob Hepromisednottotellanyoneaboutit 1 Fred没有钱 所以他决定找一份工作 2 他答应不告述任何人这事 作表语 MyjobistoteachEnglish Toseeistobelieve 1 我的工作是教英语 2 眼见为实 Mydream work dutyis 作定语 Doyouhaveanythingtosay 1 你有什么要说的吗 2 Betty是第一个知道这真相的人 Bettywasthefirsttoknowthetruth 作状语 Hespokeloudly soas inorder tobeheard Theyjumpedwithjoytohearthenews I mtootiredtowalkanyfurthertonight 目的状语 原因状语 结果状语 作宾补 Sheaskedmetostaythere 1 她叫我呆在这儿 2 请允许我介绍Mr White给你们 PleaseallowmetointroduceMr Whitetoyou ask advise teach tell promise show sb todo 注意 A 有些动词后面的不定式不带to 如feel 一感 hear listento 二听 make have let 三让 see watch notice observe 四看 Iheardthemsingapopsong Theteachermademeanswerthequestion Wewatchedthemplayfootball 注意 B 动词不定式的否定式只须在to前加not Myfatherdecidednottotakeupthejob Theteachertoldusnottobelateagain 注意 C 作简短回答或避免不必要的重复时 动词不定式常常省去to后面的动词 只保留to A Wouldyouliketocometomyparty Marywantedtousemybike butIaskedhernotto usemybike B Yes I dloveto cometoyourparty Mary想用我的自行车 但我叫她别用 Modelverbs must haveto don tneedto don thaveto Mustsb Do Doessb haveto 必须 不得不 表示义务 命令或必要 后面接动词原形 Soldiersmustobeyorders Wemustkeepourword 2 must用在否定句结构中表示 不允许 禁止 Hemustnotleavehisroom Youmustn tsmokeintheoffice must的用法 3 must用在一般疑问句中 肯定回答用must 否定回答用needn t或don thaveto MustIhanditinbeforefive No you Yes you youneedn t don thaveto youmust haveto的用法 haveto由have todo组成 因此具有have的各种时态 Heisaninvalidandhastohaveanurse Sheknewwhatshehadtodo Ishallhavetoreconsidermyposition Heisalwayshavingtoexercisejudgment must和haveto的区别 含义不同 must表示说话人的主观思想 强调个人意志和主观的决心 haveto侧重于客观上的必要 强调客观条件作用的结果 Youmustdoitnow Ihavetogonow 3 否定含义不同在否定句中 haveto表示不需要 must则表示不允许 Youdon thavetogothere Youmustn tgothere 2 适用时态不同must只能用于一般现在时和一般过去时 在间接引语中 haveto可用于更多的场合 ShesaidshemustdowellinherEnglish BUsingmustandhaveto Weusemustandhavetotosaythatitisnecessarytodosomething Havetohasdifferentforms hastohadtowillhavetohave hasgotto Tip1 mustnot mustn tdonothaveto don thaveto Tip2 Weusehavetowhenthesituationmakessomethingnecessary Ihavetousethemtoreachtheboxonthefridge Shehastotakeherdaughterfromschoolintheafternoon Weusemustwhenthespeakerfeelsthatsomethingisnecessary Imustrunawayfromthem Gulliverthought Weusemustnottosaythatsomethingisnotallowed Youmustnotsmokeinthelibrary Weusedonothavetotosaythatitisnotnecessarytodosomething Wedonothavetogotoschoolatweekends You 1 keepquietinthelibrary You 2 keepthebookscleanandtidy You 3 draworwriteinthebooks You 4 eatordrinkinthelibrar Libraryrules AmyistellinghercousinShirleysomelibraryrules Completewhatshesayswithmust mustnot havetoordonothaveto must must mustn t mustn t You 5 returnthebooksontime Ifyouwanttokeepthemlonger you 6 renewthem You 7 bringyourstudentcardeverytimeyougotothelibrary butremembertobringyourlibrarycard must haveto don thaveto 同义句转换 Exercise Gulliverdidnotknowwherehecouldfindotherpeople Gulliverdidnotknow otherpeople 2 Gulliverwonderedwhohecouldaskforhelp Gulliverwondered help wheretofind whotoaskfor 3 Gulliverdidnotknowhowhecouldbreaktheropes Gulliverdidnotknow theropes 4 Gulliverfoundoutwhathecoulddowiththetinyman Gulliverfound withthetinyman 5 GulliverdecidedwhenheshouldleaveLilliput Gulliverdecided Lilliput