精选优质文档-倾情为你奉上英语三大从句主语从句用作主语,如: That the earth is round is true. 地球为圆的是真实的。 宾语从句用作宾语。如: Do you know where he lives? 表语从句用作表语,如: My opinion is that you should not go alone. 我的意见是你不应单独前往。 同位语从句用于解释说明前面的名词。如: The fact that the earth is round is true. 地球是圆的的事实是真实的。(that从句用于解释说明the fact) 定语从句相当于一个形容词,用于修饰前面的名词。如: The student who answered the question was John. 回答问题的学生是John. 状语从句相当于一个副词,如: When it rains, I usually go to school by bus. 天下雨时,我通常坐公共汽车上学。(时间状语) If he comes tomorrow, yo