on my back烦着我
get off my back不要再烦我了
behind my back背着我干一些事
stab in the back背后下毒手
pat on the back鼓励,表扬
I will scratch your back if you will scratch mine礼尚往来
straight from the shoulder直言不讳
on her shoulders在他的角度
rub shoulders揉揉
cold shoulder冷遇
at the top of my lungs声嘶力竭
off my chest心里话说出来了
save my breath不白费力气