This paper is to examine the focus of marked passive predicates in the light of semantics through analyzing the regular distribution of the sentence focus to know that the normal focus of passive predicates occurs in the end of sentences, which is called focus in the end of sentences. Due to different presetting, both the passive and active can become the focus in the passive predicates as a result of the function of the comparison of focuses. Interrogatives in interrogation are often the focus of information. To examine the focus helps to analyze the cause of the information of passive predicates.