本文从主、从句间事件所发生的时间关系入手，探讨了复合句中时、体用法的三个问题：复合句中时、体使用的一般规则；影响复合句中时、体选用的其他因素；句法功能测检。研究表明：在许多情况下，主、从句间事件所发生的时间关系决定时、体的使用；除时间关系因素之外，事件类型、从属连词、因果关系等因素也会影响时、体的选用；句法测检是句法研究中获取客观依据的行之有效手段，它能帮助人们区分那些貌似相同，其实功能各异的从句。 This article starts with the time relationship between the events of the main and the subordinate, explores the three problems of the time and the body usage in the compound sentence: the general rules of the body and the body in the compound sentence, the other factors Syntactic function test. The research shows that in many cases, the use of the body is decided by the time relationship between the events of the main and the subordinate. In addition to the time-related factors, the types of events, subordinate conjunctions and causal relationships also affect the body’s selection ; Syntactic test is an effective means of obtaining an objective basis for syntactic research, it can help people distinguish between seemingly the same, in fact, different functions of the clause.