高二英语课件：非谓语动词作主语

非谓语动词作主语非谓语动词作主语1一、动名词（V.ing）作主语LosinghimwasbluelikeI’dneverknownMissinghimwasdarkgreyallaloneForgettinghimwasliketryingtoknowsomebodyyou’venevermetButlovinghimwasred~~~一、动名词（V.ing）作主语2一.TheusageofV-ingformusedassubject动名词做主语往往表示经常性、习惯性的动作或状态。WatchingnewsonTVhasbecomearoutineforme.(经常性、习惯性的动作)Talkingiseasierthandoing.(状态）一.TheusageofV-ingformus3一.动名词做主语的3种句型(1)动名词直接置于句首。Talkingiseasierthandoing.(2)Ving

形式作主语时常后置,用it作形式主语Itisawasteoftimedoingsth(3)Therebe

结构中作主语：A.Thereis+nodoingB.Thereisnopointdoing一.动名词做主语的3种句型4

(1)动名词直接置于句首。WatchingnewsonTVhasbecomearoutineforme.Seeingisbelieving.(1)动名词直接置于句首。5(2)V-ing

形式作主语时常后置,用it作形式主语。isawasteoftime.形式主语真正主语Itisawasteoftimeplayingvideogames.playingvideogamesisawasteoftime.形式主语真正主语Itis6常见句式:Itisnogood/nouse/uselessdoingsth

做、、、没有用的Itisawasteoftimedoingsth做、、、是浪费时间的常见句式:Itisnogood/nouse/use7(3)Therebe结构中作主语：A.Thereisno+doing

表示不可能做某事例子：Thereisnoknowingthefuture==wecan’tknowthefuture.我们不可能知道未来发生什么

Thereisnotellingwhatheisgoingtodo．说出他要干什么是不可能的。Thereisnosayingwhatmayhappen.说出将要发生什么是不可能的。

(3)Therebe结构中作主语：8B.Thereisnopointdoing做某事没有意义There’snopointhavingwishesifyoudon’tatleasttrytodothem.B.Thereisnopointdoing做某事9Talkingiseasierthandoing.LosinghimwasbluelikeI’dneverknown.Missinghimwasdarkgreyallalone.动名词作主语时，单个V-ing做主语，谓语动词用单数。Collectingstampsandrunningarehishobby.两个或两个以上表达不同意义的V-ing作主语，谓语动词用复数。Talkingiseasierthandoing.动10主谓一致：Seeing____(be)believing.WatchingTVandreadingbooks_______(has)becomearoutineforme.主谓一致：11一.动名词做主语的用法(1)动名词直接置于句首。Talkingiseasierthandoing.(2)Ving

形式作主语时常后置,用it作形式主语Itisawasteoftimedoingsth(3)Therebe

结构中作主语：A.Thereis+nodoingB.Thereisnopointdoingsummary单个V-ing做主语，谓语动词用单数。一.动名词做主语的用法summary单个V-ing做主语12SinceTomwenttohighschool,_______(watch)TVhasbecomearoutineforhim.Hismotheralwayssaid“it’swasteoftime_________(spend)timeinfrontofTV.”However,Tomalwaysanswers“IcankeepabalancebetweenstudyingandwatchingTV.”Asyouknow,talking________(be)easierthandoing.Later,Tomdoesn’tdowellinthefinalexamandheissosad.Tom’smotherknowsthatthereisnopoint_________(scold)himnow.soshecomfortshimandsaid“itisnouse_________(cry)overspiltmilk.Thereisno_________(tell)whatyoucando,justtryyourbest.SinceTomwenttohighschool,13SinceTomwenttohighschool,_watching______(watch)TVhasbecomearoutineforhim.Hismotheralwayssaid“it’swasteoftime__spending___(spend)timeinfrontofTV.”However,Tomalwaysanswers“IcankeepabalancebetweenstudyingandwatchingTV.”Asyouknow,talking__is__(be)easierthandoing.Later,Tomdoesn’tdowellinthefinalexamandheissosad.Tom’smotherknowsthatthereisnopoint___scolding____(scold)himnow.soshecomfortshimandsaid“itisnouse___crying___(cry)overspiltmilk.Thereisno___telling___(tell)whatyoucando,justtryyourbest.SinceTomwenttohighschool,14二、不定式（to+动词原形）作主语1、直接做主语

例句：

Tohesitatemeansfailure.犹豫不决就意味着失败。

Todothisistocutthefoottofittheshoe.这样做是削足适履。（主语和表语均用不定式）

Forhimtoadmithismistakesisnoteasy.要他承认错误是不容易的。（带逻辑主语）

Tobeworkingalldaylongisabore.整天干活使人厌倦。（不定式进行式）

Tohaveknownyouisaprivilege.认识了你真是荣幸。（不定式完成式）二、不定式（to+动词原形）作主语1、直接做主语

例句：

T152.It做形式主语

It'sunlikehimtobelate.他可不是迟到的那种人。

Howdoesitfeeltobeonyourown?自由自在的感觉怎样？

Itwouldbewrongforpeopletomarryformoney.人们为钱而结婚是错误的。（It+be+形容词+for短语+不定式）

It'sashametosaylikethat.那样说话是可耻的。（It+be+名词+不定式）

Itisagainstmayprinciplestodosuchathing.做这样的事是违反我的原则的。（It+be+介词短语+不定式）2.It做形式主语

It'sunlikehimtob16Of还是for？Itis+adj.+of+sb.+todosth.这里的形容词是描述不定式行为者的性格、品质的,如kind,good,nice,right,wrong,clever,careless,polite,foolish等It’sverykindofyoutohelpme.你能帮我,真好.

It’scleverofyoutoworkoutthemathsproblem.

你真聪明,解出了这道数学题.

Itis+adj.+for+sb.+todosth.若形容词仅仅是描述事物,不是对人的评价,用forsb.,这类词有difficult,easy,hard,important,dangerous,（im）possible等.

It’sverydangerousforchildrentocrossthebusystreet.

对孩子们来说,穿过繁忙的街道很危险.

It’sdifficultforustofinishthework.对我们来说,完成这项工作很困难.Of还是for？Itis+adj.+of+17非谓语动词做定语非谓语动词做定语181.不定式作定语，要放在它所修饰的名词之后，表示一个将来的动作。如：Theyhavethreeticketstospare.他们多三张票。Shehasplentyofclothestowear.她有足够的衣服穿。

句型thefirsttodo

Heisalwaysthefirstonetocometoschoolandthelasttoleave.1.不定式作定语，要放在它所修饰的名词之后，表示一个将来的192.分词作定语现在分词表示其动作正在发生或与谓语同时发生.Thereisagentlemanaskingtoseeyou.有一位先生要求见你。过去分词表示其动作已经完成或没有时间性.Sheisatrainednurse.她是一个受过训练的护士。2.分词作定语现在分词表示其动作正在发生或与谓语同时发生.过20*如果动作不是和谓语同时发生或正在发生，则只能用定语从句。*如果动作不是和谓语同时发生或正在发生，则只能用定语从句。213.动名词作定语，只放在名词前，说明该名词的性能或用途Thedoctortoldmenottotakesleepingpills.医生叫我不要服安眠药。3.动名词作定语，只放在名词前，说明该名词的性能或用途Th224.tobedone,beingdone,done均可用作定语，且都表示被动意义，其区别在于：tobedone表示将来，beingdone表示目前正在发生，done表示过去已经发生。Thehousetobebuiltnextyearisacinema.明年建的那座房子是家电影院。Thehousebeingbuiltnowisacinema.现在正在建的房子是家电影院。Thehousebuiltlastyearisacinema.去年建的那座房子是家电影院。4.tobedone,beingdone,don234.Therewereseveralnewevents________(add)totheprogramforthe2008BeijingOlympicGames.5.