1.keep +形容词 例如 keep fit 保持健康
2.keep+sth/sb +形容词 例如 keep the door closed/open 让门关闭/开着 适合本题。
close为动词,起被动形式closed可作形容词,表示关闭的。
open既可作动词也可作形容词。
3.keep +doing 一直做某事 例如 keep smiling 保持微笑
4.keep ... from doing ... 阻止做某事。。。 例如 keep him from escaping 组织他逃走
5.keep a pet 饲养一个宠物
6.How long may I keep this book ? keep指借,表示手中持有。
不懂再问。
keep closing 强调门被反复关上
keep closed 强调门是关着的状态
keep opening 强调门被反复打开
keep open 强调门是开着的状态 一般不用keep opened