students of english must learn writing,for they will need it in their future work. 学英语的学生必须学会写作,因为他们在未来工作中要用到这个技能. 这当然是个compound sentence(并列句),而且是因果关系的并列句. 因为逗号后面的for等于because.
楼上明显不对。 compound sentence 是复合句,即有一个主句还有一个或多个从句。 students of english must learn writing,for they will need it in their future work. for 在此处引导哟个原因状语从句。 complex sentence就是复杂句,成分相当复杂 什...