remain和keep的区别是意思不同、词性不同、侧重点不同。
意思不同emain 意思是“留在”；keep 意思是“保持”。词性不同remain是不及物动词，keep是及物动词，它们有如下区别：
(1)表示“继续保持或处于原来的状态”时，可用remain，例如：The door remains closed.门一直关着。
（2）表示“需要设法才能保持或处于某种状态”时，应用keep，例如：Although they have many difficulties, they keep happy.尽管他们有很多困难，他们仍然设法保持开心。
（3）表示“使某人或某物保持某种状态”时，只能用及物动词keep，例如：You must keep the room clean. 你必须保持房间温暖。侧重点不同remain：remain指某人或某物仍留在原处或保持原来的状态。keep：keep最常用词，指长时间牢固地保持或保存。remain释义：v.保持；留下；遗留；留在；保持不变；一直是；剩余；逗留；余留短语搭配：remain silent保持沉默remain to be seen尚待见分晓双语例句：Is research into breast cancer to remain the Cinderella of medicine?对乳腺癌的研究仍然会是医学的疏漏吗？They will have to import from overseas to remain in business.为维持经营他们必须从国外进口。keep释义：v. 保持；保留；继续；贮藏；经营；遵守；供给；照管；饲养；耽搁；保持食物不变质；健康状况如何；保守（秘密@）；记录；遵守；保护n. 生计；保存；城堡主楼；监狱；围墙双语例句：Paul earns his keep by helping his elderly landlord.保罗靠帮助他年迈的房东干活来维持生计。The furniture was in good keep.这家具保存得很好。
