Up to one's neck
深深卷入某事物中
某人要做的事情实在太多 忙的不可开交
They were up to their necks in trouble with the press.
I'm up to my neck in work right now.
我现在忙得简直无法应付

To break one's neck
拼命做某事
Do not break your neck on the work; You have plenty of time. 
你不用那麽拼命地工作；有的是时间。

get it in the neck
受到惩罚
If his dubious transactions come to the notice of the authorities,
he‘ll get it in the neck;
如果他不诚实的交易给当局察觉了, 他就要受到严厉的惩罚。
come to sb.'s notice  引起某人注意

stick out one's neck
冒风险   枪打出头鸟
I'm not about to stick out my neck