1)get your head together：to get one's thoughts or attitude properly organized 整理思绪；冷静一下
例句：The office manager had a family bereavement and didn't feel up to work. "I think I need to take some time off to get my head together."
2)play to the gallary：哗众取宠
Here goes another short poem for you packed with some Shakespere idioms.
Change sth, add sth and we will have a better one.
What a certain politician said
Was all Greek to me
But many cheered and clapped
And then voted for the chap.
Now it's such a sorry sight
That by playing to the gallery
He made millions take delight
In a fool's paradise country.
3)take it as read(that...)：to consider sth. not worth discussing 姑且以为；想当然地以为
例句：
I will take it as read that everybody knows how to play this simple game.
我会想当然地以为人人都会玩这个简单游戏。
4)play along with：you act as if you believe it even though you don't 假意附和；to let sth. run its course without saying no and see what happens, but I don't believe this at all 任其自生自灭观望中
例句：a)It is a good idea to play along with the schizophrenics' delusions.
b)I don't like fishing but I play along with my boss because I want promotion.
我不喜欢钓鱼，但为了升职，我还是陪老板一起钓鱼。
5)rub off onto：感染，沾上
例句：If you surround yourself with positive people, their energy will rub off onto you.
如果你和积极的人相处，他们的正能量也会传递给你。
I spend a lot of time with him becauseI hope his luck will rub off onto me.