IT 用法和强调句1.指提到的事物: Dongguanisabeautifulcity,isntit? Isthisyourdog ?No,itisnt. Heisill.Itswhyheisabsent. Ihateitthathessolazy. 2.指婴儿或人( 未知性别): Whoisthebaby ?Itsme. Someoneisknockingatthedoor.Whoisit? 一、it 作人称代词1. 指天气: 2. Itissunnytoday,isntit? 2. 指时间: Itwas10oclockwhenshecameback. ItsNovembr30,2009. 3. 指距离: Itisanhourswalk/ridefrommyhometotheschool. 4. 指环境: Itwasveryquietinthecaf. 5. 指度量: Itisabout5kilograms. 6. 指价值: Whatsthepriceofthebook?Itis20yuan. 二、it 作非人称代词三、it 用作形式主语 1.Itis+adj/n+(forsb.)t