learning aims: 1. review the use of “it” 2. learn useful “it” structures important point: learn emphatic sentence. difficult point: master the use of” it”. 使用说明及学法指导：1. 通过自学同步检测p，完成预习案。2. 完成时间：30分钟。预习案 previewing case task 1 写出“it”在句中指的内容。 1) guangzhou is a beautiful city, isn’t it? ( ) 2）you’ve helped me a lot; i’ll never forget it. ( ) 3）— what’s this? — it’s a computer. ( ) 4）— whose book is that? — it's hers． ( )
