PeriodThreeGrammar，Speaking&Writing一、动词ing形式作主语1.动词ing形式作主语往往表示经常性、习惯性的动作，谓语动词用单数形式。Swimmingismyfavouritesport.游泳是我最喜欢的一项运动。动名词和不定式作主语的区别：动名词动名词作主语表示经常性、习惯性的动作Lyingiswrong.撒谎不对。不定式不定式作主语表示具体的或一次性动作Tolietoheriswrong.对她撒谎不对。2.形式主语it代替动词ing形式作主语。此类句式常见的有：It’sawasteoftimedoingsth.做某事是浪费时间。It’suseless/worthwhiledoingsth.做某事没用/是值得的。It’snogood/use/fundoingsth.做某事没好处/没用/没意思。Itisawasteoftimetryingtopersuadehimtogiveupsmoking.想说服他戒烟完全是浪费时间。Itisworthwhilereadingsuchawonderfulnovel.读这样一本精彩的小说很值得。Itisnousewaitingforotherpeopletomakedecisionsforyou.等别人替你做决定是没有用的。3.当句型“Thereisno...”表示“不允许、禁止某种行为的发生或存在”时，需用动词-ing形式作主语。Thereisnodenyingthattheenvironmentisfrombadtoworse.不能否认环境状况正在逐步恶化。Thereisnojokingaboutsuchmatters.这种事开不得玩笑。即时跟踪1用所给动词的正确形式填空1.Swimming(swim)isoneofthebestallroundexercises.2.Being(be)abletospeakanotherlanguagefluentlyisagreatadvantagewhen1youarelookingforajob.3.It’sawasteoftimediscussing(discuss)suchmatterswithhim.4.Thereisnosaying(say)whatmayhappen.5.Itisnogoodarguing(argue)withhim—heisverystubborn.二、动词ing形式作宾语1.作动词的宾语常接动词ing形式作宾语的动词可用下面的口诀帮助记忆：避免错过少延期(avoid，miss，postpone)建议完成多练习(advise，finish，practise)喜欢想象禁不住(enjoy，imagine，can’thelp)承认否定与嫉妒(admit，deny，envy)逃避冒险莫原谅(escape，risk，excuse)忍受保持不介意(stand，keep，mind)Hetriedtoavoidansweringmyquestions.他试图对我的问题避而不答。Idon’tlikewatchingtelevisionbutIenjoylisteningtotheradio.我不喜欢看电视，但是喜欢听收音机。Wouldyoumindopeningthewindow?你介意打开窗子吗？2.作动词短语的宾语常见的跟动词ing形式作宾语的动词短语有：insiston，objectto，begoodat，befondof，leadto，putoff，giveup，lookforwardto，feellike，devoteto，getusedto，payattentionto，beworth等。Heinsistedondoingitinhisownway.他坚持要按照自己的方法做。Sincetheexaminationisaroundthecorner，Ihavetogiveupdoingsports.既然考试迫在眉睫，我不得不放弃做运动。Theoldcouplehavegotusedtolivinginthecountryside.这对老夫妇已习惯生活在乡下了。3.有些动词和动词短语后跟动词不定式和动名词作宾语皆可，但含义不同。常见的有：动词接宾语的形式意义forgettodo...忘记做……forgetdoing...忘记做过……remembertodo...记着要去做……rememberdoing...记得做过……regrettodo...遗憾/抱歉要做……regretdoing...后悔做了……trytodo...尽力做……trydoing...尝试做……meantodo...打算做……meandoing...意味着……2goontodo...接着做(另外一件事)goondoing...接着做(同一件事)stoptodo...停下来去做某事(另外一件事)stopdoing...停止做某事(同一件事)Trytowritebetterinyourexam.考试时尽量要写得更好些。Sincethefrontdoorwon’topen，whynottryopeningthebackdoor?既然前门打不开，为何不试一试后门呢？4.动词need，require，want表示“需要”时，其后跟动名词的主动式或不定式的被动式作宾语，意义没有区别。Thewindowneeds/requires/wantscleaning.＝Thewindowneeds/requires/wantstobecleaned.窗户需要擦了。即时跟踪2用所给动词的正确形式填空1.Ihavemadeupmymind，andIdon’twanttoputoffmaking(make)atryatit.2.Wastingyourtimemeansshortening(shorten)yourlife.3.Whileshopping，peoplesometimescan’thelpbeingtalked(talk)intobuyingsomethingtheydon’treallyneed.4.Hetriedeating(eat)sweetsi...
