（一）主语从句主语从句定义在复合句中充当主语成分的句子叫做主语从句。 第一部分常规主语从句，即句子在复合句中充当一个主语 主语从句的时态：不受主句的时态影响和限制。 （1）That he finished writing the composition in such a short time surprised us all. （2）Whether we will go for an outing tomorrow remains unknown. （3）Who will be our monitor hasnt been decided yet. （4）Whom we must study for is a question of great importance. （5）What caused the accident remains unknown. （6）Whatever you did is right. （7）Who the watch belongs to was lo
