Question

keep的用法？

Answer 1

回答如下：
英语动词keep的用法：
1. 作及物动词，意思是“饲养，养活，喂养，保持，遵守，保存，保守，维持等，经营”。例如：
Please keep your promise.请遵守诺言。
You must keep this secret. 你一定要保守秘密。
He has two children to keep. 他要养活两个孩子。
She is feeding pigs now. 她现在在喂猪。
2. 它可以作系动词，后跟形容词作表语。例如：
I work out regularly to keep fit. 我经常做运动以保持健康。
Keep clean and confident. 保持清洁和自信。
3. 它可以作使役动词，意思是“让，使”，后跟宾语+宾补(形容词、副词、介词短语、现在分词和过去分词)。例如：
You must keep the room clean. 你必须保持房间清洁。
I am sorry to have kept you waiting long. 对不起，我让你久等了。
Keep the door open. 敞开门。
I can't keep my child at home.我不能把孩子放在家。
4. 它可以后跟动名词作宾语，也可以用keep on 后跟动名词，其意思是“继续(坚持，反复，不断)做某事”。例如：
She always keeps smiling. 她总是保持微笑。
He kept (on) doing the experiment until he succeeded. 他反复做这个实验，直到成功。

Answer 2

keep doing sth.坚持做某事

强调状语的继续，常与表示延续动作的动词与静止状态的动词连用，如(hope, think, wonder, dream, sit, stand, lie, sleep等)
He kept talking until the meeting was over.他一直在说，直到会议结束。
He kept eating/ smiling/ walking.他一直在吃/笑/走。
She keep running她一直在跑（没停过）
He kept standing in the street .他一直站在大街上。
Please keep sitting where you are.
We’ll keep going forward.
We kept hoping that they would chance to come to china (again) some day.

keep on doing sth.表示动作反复，强调动作与动作之间有间隔，常与表示短暂动作的动词连用。 “坚持做某事”，克服困难继续坚持。
He kept on ringing me up, but I don't want to keep in touch with him any more.
他不断地给我打电话，可我不想和他保持联系了。
The boy kept watching the passing traffic at the gate.
这个男孩在门口不停地看着过往的车辆。
She kept on raising her hand她反复举手（不是一直举着手）
He kept on repeating these words over and over. 他一遍又一遍重复这几句话
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