turn one's back on sb.

(1) turn one's back on sb./sth.基本义“转身背对......”

(2) turn one's back on sb./sth.引申义“对……不闻不问，对……漠不关心，背弃……”

英语解释为to refuse to help, support, or be involve with someone or something。

例

I turned my back on my friends and my family, and everything I believed in.

我背弃了我的朋友，我的家庭，我所**的一切。

He would never turn his back on this company.

他绝不会背弃这些同伴的。《摩登家庭》

turn a blind eye to sth.

turn a blind eye to sth. “对......视而不见，对......熟视无睹，对......睁一只眼闭一只眼”

英语解释为to deliberately ignore something that you know should not be happening。

例

He decided to turn a blind eye to his boss's goings-on.

他决定当做没看到他老板的异常举动。

Jules was turning a blind eye to her husband's infidelities.

朱尔斯对她丈夫的不忠行为睁一只眼闭一只眼。

turn a deaf ear to sth.

turn a deaf ear to sth. “对......充耳不闻，对......置若罔闻”

英语解释为to be unwilling to listen to what someone is saying or asking。

例

How can you turn a deaf ear to your friend's distress?

你怎么可以对你朋友的痛苦置若罔闻？

He turned a deaf ear to his wife's advice.

他对他妻子的建议置若罔闻。