Unit1FoodforthoughtUsinglanguageGrammar情態(tài)動詞課件高中英語

B2U1GrammarActivity1,p6:TranslatethesentencesActivity1,p6:Matchthewordsinboldandthemeanings1beafraidtodosomething2notbenecessarytodosomething3giveadvicetodoornottodosomething4benecessaryorgivestrongadvicetodosomething5havetheabilitytodosomethingdarenotneedn’thadbetterhavetowasabletoHowmanymodalverbsdoyouknow?can(could),may(might),will(would),shall(should),must,need,hadbetter,oughtto,usedto,beableto...1.情態(tài)動詞有一定的詞義,不能獨(dú)立作謂語，必須和動詞原形一起構(gòu)成謂語*Youcanbuythesebooksforthecourse.2.情態(tài)動詞一般無人稱和數(shù)的變化,個別有時態(tài)變化。*TheyspokesofastthatIcouldn’thearwhattheyweresaying.3.構(gòu)成否定句時,not放在其后面。*Theyoungmancan’tcarrythebigstone.*Daddarenottrysomedisheseveraftermanyyearsofmarriage.情態(tài)動詞Modals情態(tài)動詞01beableto1.beableto+動詞原形，表示“某人做某事的能力”Withherparents’help,Maryisabletoliveanormalteenagelife.在父母的幫助下，瑪麗過上了正常的青少年生活。2.was/wereableto還可以表示“某人過去成功地做了某事”Theywereabletoescapefromthebuildingwhenthefirebrokeout.火災(zāi)發(fā)生時，他們成功地逃出大樓。情態(tài)動詞02dare1.dare作情態(tài)動詞，譯為“敢”，用于否定句和疑問句，后接動詞原形.否定形式為darenot或daren’tHowdareyousayI’munfair?Hedarenotsaywhatshethinks.2.dare作實義動詞，有人稱、時態(tài)和數(shù)的變化.肯定句后接todosth；否定句和疑問句后接(to)dosthHedarestochallengeallthedifficulties.Hedoesn’tdare(to)gotherealone.情態(tài)動詞03need1.need作情態(tài)動詞，譯為“需要”，用于否定句和疑問句，后接動詞原形。否定形式為needn’tNeedImakeanappointmentwithDoctorWang?Youneedn’tcleanthetableforus.2.need作實義動詞，有人稱、時態(tài)和數(shù)的變化.Ineedtocallhimrightnow.Thedogneedstobefed.情態(tài)動詞04haveto1.haveto譯為“不得不”，有時態(tài)和人稱變化。否定式為don’t/doesn;t/didn’thavetoHehastopassthisimportantexam.Youdon’thavetogivemethebook.2.區(qū)分：haveto強(qiáng)調(diào)客觀需要，must強(qiáng)調(diào)說話者的主觀意愿。Wehavetofinishtheworkbeforelunch.（強(qiáng)調(diào)客觀情況迫使，如果不完成就會…是不得已為之）Wemustfinishtheworkbeforelunch.（強(qiáng)調(diào)說話人希望不要拖延盡早完成）情態(tài)動詞05hadbetterhadbetter譯為“應(yīng)該，最好”，沒有人稱和時態(tài)變化，常寫作“sb’dbetter”,否定式為hadbetternotYou’dbetterkeepthiscardathand.Shehadbetternottellliesanymore.CompletethetipsforgoodtablemannerswiththecorrectformofthemodalsinActivity1.WhilegoingonyourfirsttriptotheUKisexciting,newanddifferentcustomscanalsobeconfusing.Tablemannersarenoexception.Butdon’tworry—herearesometips:?You1._________waituntileveryoneelsehasbeenservedbeforeyoustarteating.?Sometimestherearesomanyknivesandforksthatyou2.__________pickthemupincaseyougetitwrong.Thetrickistostartwiththeonesontheoutside.?Whenyoufinishyourmeal,you3.____________placetheknifeandforktogetheronyourplatewiththehandlesatthefouro’clockposition.Tablemanners,however,candifferindifferentsituations.Forexample,you4.____________________useaknifeandforkwheneatingahamburgerorpizza.Justremember:wheninRome,do