•Discriminate against sb/sth (phrasal verb) -

to single out a type of person or thing for special negative treatment or denial of equal treatment.（歧视）

Examples:　　

1.They believe the law discriminates against women.　　 2.She felt she had been discriminated against because of her age.

•Make fun of sb/sth (idiom) -

To make unkind insulting remarks about someone or something.（取笑，讥笑）

Examples:　　

1.Please stop making fun of the movie. You don't have to sit here and watch it, you know.　　

2.The other children were always making fun of him because he was fat and wore glasses.

•Play dumb (idiom) -

To pretend to not know or not understand something. （装傻，扮无知）

Examples:　　

1.Don't play dumb with me – I know you took the money.　　

2.I'm supposed not to know that he is getting fired, so I'm just going to play dumb the next time I see him.

•Soul-searching (noun) -

Careful thought about your beliefs, attitudes, or actions because you think it is important to behave in an honest and moral way. （自我反省，反思）

Examples:　　

1.I did a lot of soul-searching, trying to find out what had gone wrong in my life.　　

2.After much soul-searching, he decided it was wrong to vote in the elections.

•Tar (sb/sth) with the same brush (idiom) -

To unfairly categorize someone or something as being the same as another person or thing, usually in a negative manner. （一竿子打翻一船人）

Examples:　　

1.Just because the CEO turned out to be a rotten scoundrel doesn't mean we should tar the entire company with the same brush.　　

2.Football supporters all get tarred with the same brush when there's trouble.