1. keep on doing sth中on可以看作介词,当然这不是讨论的重点;
2. 表示再接再厉时,一般用keep at it / keep it up,没查到使用keep on it的权威依据。
3. keep on something通常表示 to pay close attention to something(密切关注),例如:This is a problem. Keep on it until it's settled.
1. keep on doing sth中on可以看作介词,当然这不是讨论的重点;
2. 表示再接再厉时,一般用keep at it / keep it up,没查到使用keep on it的权威依据。
3. keep on something通常表示 to pay close attention to something(密切关注),例如:This is a problem. Keep on it until it's settled.
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