核心句型：
He needs to be kept in line.
要好好管束他一下。
keep sb. in line直譯過(guò)來(lái)就是：“讓某人排隊(duì)”，這個(gè)短語(yǔ)的正確意思是：“管束，守規(guī)矩，讓某人老實(shí)點(diǎn)”。因此，當(dāng)美國(guó)人說(shuō)"He needs to be kept in line."時(shí)，他/她要表達(dá)的意思就是:"He needs to discipline himself."、"He sould be taught to behave himself."。
情景對(duì)白：
Benjamin: My assistant always does what he thinks right, and he never cares about others.
本杰明：我的助理總是按照自己的想法去做，從來(lái)不管別人的感受。
Boss: He is unaware of his behaviour. He needs to be kept in line.
老板：他太不注意個(gè)人行為了，要好好管束他一下。
搭配句積累：
①I(mǎi) agree with you. Like teacher, like student.
同意，正所謂嚴(yán)師出高徒。
②I'm mad at him.
他快把我給氣死了。
③He is going too far!
他太過(guò)分了！
④Otherwise, he will cause trouble sooner or later.
否則，他遲早會(huì)惹麻煩的。
單詞：
discipline vt. 自律
Order and discipline have been placed in the hands of headmasters and governing bodies.
維持秩序和紀(jì)律的工作已交接給了校長(zhǎng)和管理機(jī)構(gòu)了。
It was that image of calm and discipline that appealed to voters.
正是那個(gè)冷靜、自律的形象打動(dòng)了選民。
True discipline is self-discipline.
真正的紀(jì)律是自律。