教学内容分析
This teaching period mainly deals with the grammar：the use of “it”．“It” has many usages in the English language.“It” can be used as a pronoun and the form of subject and object，and be used to express emphasis.From Unit 3 we know that “it” can be used as a pronoun and the form of subject and object.In this unit we will learn that “it” can be used to express emphasis.This kind of sentence is called emphasized sentences.Its main form is “It is/was...that/who...”，which is a very useful sentence pattern.
