高中英语it用法公开课ppt（共30张PPT)

Grammar The use of “it” How much do you know about “it”? The Use of “it” 代词 it 引导词 it It句型归纳 Sentences With “it” 1. 做人称代词，代替前文提到过的事物。 代词 it You body becomes accustomed to having nicotine in it. 2. 用以代替指示代词this, that。 --- Whose text-book is that? --- It’s hers. --- What’s this? --- It’s a flag. As you know, if you do the same thing over and over again, you begin to do it automatically. 3. 用以代替未知的人或婴儿。 Someone is knocking at the door. Go and see who it is. your body the thing 4. 做非人称代词，指代时间、天气、距离、环境、季节、日期、价值等。 It’s time for class. It is summer now and it gets hotter and hotter. It’s about two kilometers from here to my home. It is very quiet in our classroom every night. 代词 it ---What's the date today? ---It's May 15, 2013. ---What's the cost of the T-shirt? ---It is 150 yuan. 时间 天气 距离 环境 季节 日期 价值 It was a sunny day. Peter decided to go for a walk to the park even though it was 2 miles away. He was just about to leave the house whe