5、r11,2005.指日期4.Itis9o’clockatnight.指时间5.Itisbadtosmoke.形式主语6.Itisnogoodsmoking.形式主语7.Itislikelythathewillsucceed.形式主语Step3Theuseof“it”一、“it”作人称代词1.it的最基本用法是作代词,主要指刚提到的事物,以避免重复:Xi’anis a beautiful city,isn’t it?Theywatchedthetrainuntilitdisappearedinthedistance.2.也可以指动物或婴儿(未知性别的婴儿或孩子):Isthisy
6、ourdog?No,itisn’t.二、it作非人称代词it有时并不指具体的东西,而泛指天气、时间、日期、距离、价值、度量、温度、环境等,称为非人称的it:1.指天气:Itisalovelyday,isn’t it?Itisabitwindy.2.指时间:Itwasnearlymidnightwhenshecameback.3.指环境:Itwasveryquietin the café.4.指距离:Itishalfanhour’s walk tothecitycentrefrommyhome.5.指日期:What'sthedatetoday?It'sMay1,2007.6.指