Keep v（使）保持；繼續(xù)；使耽擱；使延誤 n.生活必需品；生活費(fèi)用；城堡主樓

一、?keep doing sth. 意為"繼續(xù)干某事"，表示不間斷地持續(xù)干某事，keep后不能接不定式或表示靜止?fàn)顟B(tài)的v-ing形式，而必須接延續(xù)性的動(dòng)詞。如：
1）He kept working all day, because he wanted to finish the work on time.
他整天都在不停地工作，因?yàn)樗霚?zhǔn)時(shí)完成工作。
2）Keep passing the ball to each other, and you'll be ok.
堅(jiān)持互相傳球，你們就行。
on doing sth. 意為"持續(xù)做某事"。如：
1)The pupil kept on asking me the same question.
這個(gè)學(xué)生不斷地問我同一個(gè)問題。
2)I kept on thinking about the match in the afternoon.
我總是想起下午的那場(chǎng)比賽。
...from doing sth.意為"阻止/防止……做某事"。如：
The heavy snow kept us from going out.
大雪使我們不能出去。

二、keep與介詞或副詞搭配，構(gòu)成動(dòng)詞短語
away意為"(使)離開；(使)不接近"，其后常接介詞from。如：
Would you keep your dog away from my boy, please?
請(qǐng)把狗拉得離我孩子遠(yuǎn)點(diǎn)好嗎？
Keep everybody away from the accident.
人人遠(yuǎn)離事故！
back意為"阻止；留在后面"。如：
She sat down quietly, but she couldn't keep
back her tears.她靜靜地坐下來，卻忍不住流下了眼淚。
together意為"在一起；動(dòng)作協(xié)調(diào)"。如：
Keep together, please.請(qǐng)聚在一起。
The eight men kept together during the boat race as though they were one.
賽船時(shí)，這8個(gè)人動(dòng)作協(xié)調(diào)，好像一個(gè)人似的。
up意為"持續(xù)；使不低落"。如：
The noise kept up all night.噪音整夜持續(xù)著。
To keep your strength up, eat well and get enough sleep.
為了保持力氣，要吃好、睡足。
up with意為"跟上；和……來往"。如：
I'm trying my best to keep up with the others in class.
我正在設(shè)法趕上班里的其他人。
do you still keep up with tom? 你和湯姆還有聯(lián)系嗎？
...in mind意為"把……記在心里"。如：
The teacher asked us to keep these sentences in mind.
老師要我們把這些句子記在心里。