山东省郯城县郯城街道初级中学初中英语 主语从句课件 人教新目标版.ppt

subjectclauses主语从句 grammar whatpartdoestheunderlinedpartserveasineachsentence atreehasfallenacrosstheroad youareastudent tofindyourwaycanbeaproblem smokingisbadforyou howdoyoudo isagreeting whatshesaidisnotyetknown thatweshallbelateiscertain whetherhewillgothereisnotknown howwecanhelpthetwinswillbediscussedatthemeeting 定义 用作主语的从句叫主语从句 它是名词性从句之一 引导主语从句的连接词有 从属连词 that whether 连接代词 who whoever whom whose what whatever 和which whichever 连接副词 when where how和why 1 连接词 1 从属连词 that whether引导主语从句只起引导作用 在主语从句中不充当任何成分 that本身无实际意义 但不能省略 whether意为 是否 放在句首句末皆可 thatpricewillgoupiscertain thathewillcomeiscertain whetherwegobytrainorbyboatmakesnodifference whetherhe llcomehereisn tclear 2 连接代词who whoever what whatever which whichever whom whose whichsidewillwinisnotclear whowillwritethepoemhasnotbeendecidedyet whateverhedidisright whokilledthescientistremainsaquestion whomsheborrowedmoneyfromstillpuzzledhim 3 连接副词when where how why等 howthishappenedisnotcleartoanyone whenhewillbebackdependsontheweather whenwe llstarttomorrowwillbetoldsoon wherethetestwillbegivenisnotyetdecided makesentences it scertainthatwewillbelate thatwe llbelateiscertain wedon tknowwhetherheiscomingornot whetherheiscomingisnotknown wedon tknowwhathewantstotellus whathewantstotellusisnotknown whenyouwillcomebackdoesn tmatter itdoesn tmatterwhenyouwillcomeback 主语从句后置 为了避免主语冗长 句子头重脚轻 经常用it作形式主语 主语从句放在后面作真正的主语 例 thatweshallbelateiscertain it scertainthatweshallbelate 1 thattheearthisroundisknowntoall 2 thatyoumissedthechanceisapity itisapitythatyoumissedthechance it sknowntoallthattheearthisround a it be 形容词 that从句 obvious true surprising good wonderful funny possible likely certain probable etc 如 itiscertainthatshewilldowellinherexam b it be 名词词组 that从句 anhonour afact apity etc 如 it sapitythatwecan tgo 2 用it作形式主语的结构 c it be 过去分词 that从句 said reported thought expected decided announced etc 如 itissaidthatmr greenhasarrivedinbeijing d it 不及物动词或短语 that从句 seem happen doesn tmatter turnout 如 ithappenedthatiwasoutthatday itdoesn tmatterwhethershewillcomeornot 1 主语从句在句首时 必须由连接词引导 不能省略这些连接词 误 theyshouldlikeeachotherisnatural 2 如果主语从句放在句首 不能用if引导 但是如果用it做形式主语 而把主语从句放在句末时 也可以用if引导 误 ifmaryreallyheardhimisreallydoubtful 注意 正 thattheyshouldlikeeachotherisnatural itisnaturalthattheyshouldlikeeachother 正 whethermaryreallyheardhimisreallydoubtful itwasdoubtfulifmaryreallyheardhim whatyouleftareonlyseveraloldbooks whatyousaidisofgreatimportance 3 主语从句中用陈述语序 后面的谓语动词用第三人称单数 4 what 引导主语从句时 谓语动词 常与其后的名词作表语一致 且根据句子的语境而定 eg 5 用于itisimportant natural necessary impossiblethat 句型中 主语从句应使用虚拟语气 用 should 动词原形 的形式 should有时可以省略 6 在it be suggested advised ordered requested insisted required中 that从句的谓语也应该用 should 动词原形 的形式 should有时可以省略 1 whereshallwespendtheholidayisn tdecided 2 youhavemadeamistakeisafact 3 thatiscertainthatwecanwin 4 nomatterwholeavestheroomlastoughttoturnoffthelights 5 ifthepolicemenwillcomeisnotcertain weshall thatyouhave itis whoever whether 改错练习 6 itissaythathewasafamouswriter 7 itisseemedthatitisgoingtorainsoon 8 thatisfactthatshewonthefirstplace 9 wholeavestheroomlastoughttoturnoffthelights 10 itisimportantthatastudentlearnsaforeignlanguage said seems itisafact whoever shouldlearn hemadeanimportantspeechatthemeetingwastrue a thatb whyc whatd how 2 we llgocampingtomorrowdependsontheweather aifbwhethercthatdwhere 3 isknowntousallthatamericaisadevelopedcountry awhichbascwhatdit 4 it sknowntousall aform