【英语简单的主语从句分析Thathefinishedwritingthecompositioninsuchashorttimesurprisedusall.Whowillbeourmonitorhasn'tbeendecidedyet.这个主语从句的主句和从句.我每次看到主语从句跟定语从句区分不】

　　英语简单的主语从句分析

　　Thathefinishedwritingthecompositioninsuchashorttimesurprisedusall.Whowillbeourmonitorhasn'tbeendecidedyet.这个主语从句的主句和从句.我每次看到主语从句跟定语从句区分不开,有什么窍门可以区分吗?