In reading practice,our students have encountered two problems.One is that long sentences that contain objective clause,attributive clause,adverbial clause,prepositional phrases and participial phrases are beyond their comprehension.The other problem is that some English sentences that consist of native English phrases and ordinary words are also thought to be difficult to understand.The goal of this paper is to present two methods,one of which is about partitioning long sentences using structure analysis and finding the conjunctions of clauses as the partitioning points,the other of which is about interpretation in English with the help of bilingual dictionary or English-English dictionary,in order to help students improve their sentence comprehension.