人教版高中英语选择性必修第一册 UNIT 3 FASCINATING PARKS Section B Learning About Language.ppt

UNIT3SectionBLearningAboutLanguage

Part1GrammarPart2Languagepoints目录索引

Part1Grammar

语法冲关?语言规则全理清一图尽览动词-ing形式作主语

情景导入阅读下面短文,体会句中黑体部分的用法。Asaforeignstudent,TomalwaysdreamsoftravellingtooneofthemostbeautifultouristattractionsinChina.VisitingXinjianginsouthwestChinahadbeenwhathewantedtodobeforehecametoChina.However,hisfindingtherighttimetogoseemeddifficultforhim.Afterdiscussingitwithhisbestfriend,theydecidedtotakeanincredibletrip,whichlastedabout57hours.Tobehonest,spendingsomuchtimeonthetrainwasreallytiring.Butbeingrewardedwithsuchbeautifulscenerymadeitworthwhile.AndhebelievedthatclimbingMountQomolangmawouldbeaspecialexperience.

【语法感悟】动词-ing形式既有动词的特征,又有名词的特征,同时也有时态和语态的变化。需要注意的是,不及物动词的-ing形式没有语态的变化。观察上面短文中的黑体部分可知,动词-ing形式作主语时,其谓语动词用形式;其逻辑主语要用或名词所有格;其被动形式为。?单数形容词性物主代词being+v.-ed

语法精讲一、动词-ing形式作主语的功能及基本用法【先感悟】①(教材典句)Eventhoughthesunisbrightlyshining,tellingwhetheritismorningornightisimpossible.②Itisuselessbuyingbooksbutnotreadingthem.③Itisawasteoftimetalkingaboutsuchuselessthings.④Itisnogoodmakingfriendswiththosewhoareaddictedtoplayingvideogames.⑤ThereisnosayingwhenRobertwillarrivehere.

【善归纳】1.功能:动词-ing形式作主语时,多表示的动作,谓语动词多用形式。?2.作形式主语,真正的主语是后面的动词-ing形式。?经常性、习惯性单数it

【明规则】it代替动词-ing形式,作主语主要用于下列句型:(1)itis+adj.+doingsthitisuselessdoingsth做某事无用itisworthwhiledoingsth做某事是值得的itisworthdoingsth做某事是值得的(2)itisawasteof+n.+doingsthit’sawasteoftimedoingsth做某事是在浪费时间(3)itisno+n.+doingsthit’snogood/nouse/nofun/nopleasuredoingsth做某事没好处/没用/没意思3.用于结构中。?therebe

温馨提示两个或两个以上的动词-ing(短语)作主语时,如果表示一件事,谓语动词用单数形式;如果表示两件或多件事情,谓语动词用复数。Goingtobedearlyandgettingupearlyisgoodforyourhealth.(指一件事)DrawingandplayingbasketballarewhatItookinterestinasateenager.(指两件事)

二、动词-ing形式的时态和语态【先感悟】①Sometimesbeingpunishedmaybeagoodthing.②Ha