biside:介词,表示“在……旁边”例句:I sit beside John in class.在班级里我坐在约翰旁边Could you get me that bookIt's beside the lamp.能帮我拿下那本书吗 就在灯旁边。
besides:做副词时意思是“也”;做介词的时候意思是“除……之外”例句:(adverb) Besides tennis, I play soccer and basketball.(副词)除网球之外,我还踢足球、打篮球。(preposition) That is a beautiful lamp besides the table.(介词)除桌子之外,那灯也挺漂亮的。