2016届高考英语(北师大版)总复习：语法专项突破-第7节 情态动词和虚拟语气课件.ppt

《2016届高考英语(北师大版)总复习：语法专项突破-第7节 情态动词和虚拟语气课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、第七节　情态动词和虚拟语气情态动词＋havedone用法musthavedone一定做过某事，其否定形式为can't/couldn'thavedonecan/couldhavedone1.本来能够做但却未做2.可能做过某事can't/couldn'thavedone不可能做过某事may/mighthavedone或许/可能做过某事should/oughttohavedone本该做但却未做，其否定形式表示本不该做但却做了needn'thavedone做了本没有必要做的事情if条件从句从句的谓语形式主句

2、的谓语形式表示现在情况动词过去式(be的过去式用were)should/would/could/might＋动词原形表示过去情况had＋过去分词should/would/could/might＋have＋过去分词表示未来情况should＋动词原形should/would/could/might＋动词原形动词过去式wereto＋动词原形if省略句如果虚拟条件句中含有were/had/should，可把if省略，把were/had/should提到主语之前形成倒装，若为否定形式，not不可提前。混合条件

3、句有时条件句的动作与主句动作发生的时间不一致，这时动词的形式应根据它们各自表示的时间加以调整。含蓄条件句①有时假设的情况不用条件从句表达，而是用butfor，without等介词(短语)或上下文来表示条件。②用连词otherwise，or等暗示后文与前面的情况相反，从而引出后文的虚拟语气。③虚拟条件通过but暗示出来，模式为“虚拟情况＋but＋真实情况”。与现在事实相反从句用一般过去时与过去事实相反从句用过去完成时与将来事实相反从句用would＋动词原形针对训练Ⅰ.用适当的情态动词填空1．(2014

4、·北京高考)________Ihaveawordwithyou?Itwon'ttakelong.【答案】Can2．(2014·大纲全国卷)Althoughyou________findbargainsinLondon，it'snotgenerallyacheapplacetoshop.【答案】can3．(2014·湖南高考)—I'vepreparedallkindsoffoodforthepicnic.—Doyoumeanwe________bringanythingwithus?【答案】needn

5、't4．(2014·江苏高考)Itwassadtomethatthey，sopoorthemselves，________bringmefood.【答案】should5．(2014·江西高考)Lifeisunpredictable；eventhepoorest________becometherichest.【答案】might6．(2014·四川高考)Istillremembermyhappychildhoodwhenmymother________takemetoDisneylandatweeke

6、nds.【答案】would7．(2014·重庆高考)I'veorderedsomepizza，sowe________worryaboutcookingwhenwegethometired.【答案】needn't8．(2013·新课标全国卷Ⅱ)Sincenobodygavehimanyhelp，he________havedonetheresearchonhisown.【答案】must9．(2013·四川高考)—Whyareyoureyessored?You________havesleptwell

7、lastnight.—Yeah，Istayeduplatewritingareport.【答案】can't10．(2013·陕西高考)Mymomsuggeststhatwe________eatoutforachangethisweekend.【答案】shouldⅡ.用所给动词的适当形式填空1．(2014·福建高考)________(be)therenomoderntelecommunications，wewouldhavetowaitforweekstogetnewsfromaroundthewo

8、rld.【答案】Were2．(2014·湖南高考)IfMrDewey______(be)present，hewouldhaveofferedanypossibleassistancetothepeoplethere.【答案】hadbeen3．(2014·陕西高考)Wewouldratherourdaughter________(stay)athomewithus，butitisherchoice，andsheisnotachildanylonger.【答案】staye