(一)主语从句主语从句定义在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 主语从句的: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 lost is u