keep 与 keep on 的区别
keep doing sth 与 keep on doing sth 的区别
还有其他的看法吗？我想多听听大家的意见
人气：207 ℃ 时间：2020-05-25 10:23:45
解答
1.如果是lie/sit/stand/walk等动词,只能用keep doing.其他用法相同如： We must keep (on) learning all the time. He kept sitting in the living-room all day, deep in thought.
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