Reading class tends to get the meaning of a text through a scientific way of text analysis.The ideology of the course should develop as linguistic theory develops.Foregrounding is a very important theory in Halliday's Functional Linguistics.Once when the theory was proposed,it was widely used in the area of linguistic pragmatism.It's of great importance to apply the theory into the teaching practice of reading class.By figuring out the linguistic norm concealed behind the phonetic,lexical,syntactic and discourse systems,the tenor of the text can hereby be disclosed.So,the application of the theory will be of great help to fulfill the purpose of reading class.