5、1.Itrainsheavily.指天气2.Itis20kilometersfromGranddad’shousetoJames’.指距离3.ItisNovember11,2005.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
7、ack.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.指季节:Itissummernow.7.指度量:Itisabout5kilograms.8.指价值:----What'sthecostoftheT-shirt?10----Itis150Yuan.三、it用作形式主语替代作主语的从句、动词不定式、动名词,而把真正作主语的从