1. break away
突然逃掉或离开。如：
The thief broke away from the policeman. 小偷从警察那逃脱了。
断绝往来，脱离。如：
He broke away from all his old friends. 他同他所有的老朋友断绝了往来。
改掉，破除。如：
You must break away from such habits. 你必须改掉那些习惯。
2. break down
坏了。如：
The car broke down after an hour’s driving. 车子开了一个小时就坏了。
失败。如：
Our plans have broken down. 我们的计划已失败了。
中断。如：
He broke down as he was singing. 他没唱完就突然停住了。
变坏。如：
Her health broke down under the pressure of work. 工作的压力把他的身体弄垮了。
3. break in
突然进来，强行进入。如：
He broke in and stole my money. 他闯进来偷了我的钱。
插嘴，打岔。如：
He broke in with some ideas of his own. 他插话谈了自己的一些想法。
Please don’t break in on our conversation. 请不要打断我们的谈话。
The secretary broke in to say that a telegram had just arrived. 秘书插话说刚收到一个电报。
注： 以上用法的` break in 通常是不及物的，但有时也用作及物动词，带宾语，表示：训练某人，使某人适应。如：
He is breaking in the new man as a machine operator. 我在训练那个新工人操作机器。
Two weeks in the new office should be enough to break you in. 在新办公室上两星期的班便足以让你适应了。
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