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动词不定式1．不定式的形式：（以动词do为例）主动被动一般式todotobedone进行式tobedoing完成式tohavedonetohavebeendone否定式：not+todoToteachEnglishismyjob.Weplantopayavisit.Heseemstoknowalot.Themeetingtobeheldtomorrowisputoff.Theteacherorderedtheworktobedone.Tocatchthefirstbus,hegotupearly.（1）一般式：所表示的动作与谓语动词动作同时发生或发生在谓语动词动作之后Theboypretendedtobeworkinghard.Heseemstobereadinginhisroom.(2)进行式：所表示的动作与谓语动词动作同时发生，（3）完成式：表示的动作发生在谓语动词动作之前Iregrettedtohavetoldalie.Ihappenedtohaveseenthefilm.Heispleasedtohavemethisfriend.Tofinishtheworkintenminutesisveryhard.Toloseyourheartmeansfailure.（1）作主语动词不定式短语作主语时，常用it作形式主语，例如上面两句可用如下形式：Itisveryhardtofinishtheworkintenminutes.Itmeansfailuretoloseyourheart.Herjobistocleanthehall.Heappearstohavecaughtacold.（2）作表语作表语的不定式带to与不带to。作表语的不定式通常带to，当主语部分含有实义动词do，不定式作表语可省to。TheonlythingIcandois(to)wait.如果不定式（宾语）后面有宾语补足语，则用it作形式宾语，真正的宾语（不定式）后置，放在宾语补足语后面MarxfounditimportanttostudythesituationinRussia.（3）作宾语：常与不定式做宾语连用的动词有：agree,ask,beg,choose,expect,fail,help,hope,learnmanage,offer,plan,pretend,promise,prefer,refuse,want,wishIhavenochoicebuttostayhere.HedidnothinglastSundaybutrepairhisbike.Thereisnothingtodobutwait.动词不定式也可充当介词宾语动词不定式与疑问词连用作宾语HegaveussomeadviceonhowtolearnEnglish.find,feel,consider,think,make+it+adj./n+todoIfinditpossibletoaskthequestion（4）作宾语补足语：want,wish,ask,tell,order,beg,permit,help,advise,persuade,allow,prepare,cause,force,callon,waitfor,invite.Isawhimcrosstheroad.Hewasseentocrosstheroad.有些动词如make,let,have,see,find,watch,observe,notice,listento,hear,feel与不带to的不定式连用，但改为被动语态时，不定式要加togetsth/sb.todoHegotthecartostart.（5）作定语：动词不定式作定语，与所修饰名词有如下关系：Ihaveameetingtoattend.①动宾关系：不定式为不及物动词时，应用介词Hefoundagoodhousetolivein.Thechildhasnothingtoworryabout.Haveyougotanythingtosend?“Haveyougotanythingtobesent?”saidthesecretary.如果句子的主语是不定式的执行者，不定式用主动。如果句子的主语不是不定式的执行者，不定式用被动。Wehavemadeaplantofinishthework.②说明所修饰名词的内容：Heisthefirsttogethere.③被修饰名词是不定式逻辑主语：Heworkeddayandnighttogetthemoney.Shesoldherhairtobuythewatchchain.（6）作状语：①表目的：Hearrivedlatetofindthetraingone.②表结果：Ivisitedhimonlytofindhimout.It'stoodarkforustoseeanything.Thequestionissimpleforhimtoanswer.④表程度：Totellyouthetruth,Idon'tlikethewayhetalked.（7）作独立成分：remembertodo/doingforgetto/doingregrettodo/doingmeantodo/doingtrytodo/doingstoptodo/doing1Doyouknowwhen_____(go)tothefarm.2Pleaseremember_______(lock)thedoorwhenyouleavetheroom.3Pleasedon’tforget______(ask)MrJohnsontocometomorrowparty.4It’sgood_______(help)otherswhentheyareintrouble.5Iwant_______(start)workatonce.6Themandownstairstoldthemanupstairsnot_______(drop)hisshoesontotheflooratmidnightanymore.togotolocktoasktohelptostarttodrop1Youmustbehungry.I’llgetsomething______(eat)2UncleWangtoldthemhow_______(make)aplanewithwoodandmetal.3Thequestionishow______(get)tothetopofthemountainquickly.4Shedidn’tknowwhat______(say)atthemeetingthedaybeforeyesterday.5”Stop_______(talk),please.Thefilmhasbeg...