keep后面加一般现在时时态，即动词的ing形式。keep后面还可以跟名词或者形容词。
keep：
v.(使)保持，处于;继续，重复(做某事);使耽搁;使延误
n.生活必需品;生活费用;城堡主楼
I said I'd go just to keep him happy.
我说过我要去只是为了让他高兴。
It is important to keep in touch with the latest research.
及时掌握最新研究情况很重要。
Keep going like that ─ you're doing fine.
就这样做下去——你做得蛮不错嘛。
I said I'd go, just to keep him happy.
我说过我要去只是为了让他高兴。
I'm sure she's keeping something back from us.
我肯定她有什么事瞒着我们。
Some teachers find it difficult to keep their classes in order.
有些教师觉得难以维持课堂秩序。
温馨提示：
