The use of It 新课标 人教版 课件.ppt

Theuseof“It”㈠1.it作人称代词1.1.it的最基本用法是作人称代词主要指刚提到的事物以避免重复:Ningboisabeautifulcityisn’tit?1.2.也可以指动物或婴儿(未知性别的婴儿或孩子):Isthisyourdog？Noitisn’t.1.3.也可指抽象事物:Itwasagreatsurprisetomewhenhedidathinglikethat．2.非人称代词itit有时并不指具体的东西而泛指天气、时间、环境等称为非人称的it：2.1.指天气：Itisalovelydayisn’tit?Itisabitwindy.㈡.it的重要句型1.Itis+被强调部分+that...该句型是强调句型。将被强调的部分放在前面其它部分置于that之后被强调部分可以是主语宾语表语或状语强调的主语如果是人that可以由who换用。如果把这种句型结构划掉后应该是一个完整无缺的句子；这也是判断强调句型与其它从句的方法。Itwasabout600yearsagothatthefirstclockwithafaceandanhourhandwasmade.Itwastheythat(who)cleanedtheclassroomyesterday.ItwasinthestreetthatImetherfather.2.Itisnotuntil+被强调部分+that...该句型也是强调句型。主要用于强凋时间状语译成汉语＂直到．．．才．．．＂可以说是not...until...的强调形式。ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.=NotuntilshetookoffherdarkglassesdidIrealizeshewasafamousfilmstar.=Ididn’trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses.3.Itisclear(obvioustruepossiblecertain....)that.....该句型中it是形式主语真正的主语是that引导的主语从句常译为＂清楚（显然真的肯定．．．）＂是主语从句最常见的一种结构。Itisveryclearthathe’sroundandtalllikeatree.=Thathe’sroundandtalllikeatreeisveryclear.4.Itisimportant(necessaryrightstrangenatural...)that...该句型和上一个同属一个句型；由于主句中的形容词不同that后的从句中要用虚拟语气（should+动词原形）should可以省去建议记住该句型中的形容词。Itisimportantthatwe(should)learnEnglishwell.Itisnecessarythathe(should)rememberthesewords.5.Itissaid(reportedlearned....)that...该句型中的it仍是形式主语真正主语是that引导的主语从句；该结构常译为＂据说（据报道据悉．．．）＂。ItissaidthathehascometoBeijing.Itisreportedthatanotherearthsatellitehasbeenputintoorbit.6.Itissuggested(ordered/demanded/insisted/commanded...)that...该句型和上一个同属一个句型主句中的过去分词是表示请求建议命令等词时that后的从句要用虚拟语气（should+动词原形）should可以省；常译为＂据建议；有命令．．．）Itissuggestedthatthemeeting(should)beputoff.Itwasorderedthatwe(shou