If the cap/shoe fits (wear it) (idiom)

Something that you say to tell someone that if they are guilty of something bad, they should accept criticism.（要是批評中肯，就接受吧）

Examples:　　

1.Look, I didn't say who was to blame for this mess - but if the cap fits, wear it.　　

2.I didn't say you look funny, but if the shoe fits, wear it !

Skim though sth (phrasal verb)

To read something quickly and not very carefully.

（瀏覽，略讀）

Examples:　　

1.Would you skim through the report and check for spelling mistakes?　　

2.I will skim through your manuscript and see whether it looks promising.

Run amok/amuck (idiom)

To behave without control in a wild or dangerous manner; to run about with or as if with a frenzied desire to kill.（橫行無忌，殺氣騰騰）

Examples:　　

1.There have been too many Hollywood films about robots running amok.　　

2.The villagers were cleaning up debris for days after the bulls ran amuck through the streets.

Clamp down on sth (phrasal verb)

To act to stop or limit something.

（打擊，箝制，壓制）

Examples:　　

1. The government is clamping down on teenage drinking.　　

2.Police here have finally clamped down on speeding.

Fish rots from the head down (idiom)

When an organization or state fails, it is the leadership that is the root cause.

　　（上樑不正下樑歪，魚從頭開始爛（這是比喻的說法，實際上魚是從肚子開始爛起。））

Examples:　　

1.His maid servant doesn't do anything as asked for. But the fish rots from the head down, look at how unorganized his own life is.　　

2.The company was bound to be closed sooner or later considering the kind of mangers that they had hired. A fish rots from the head down after all.