no roof over one's head

1. 無家可歸
   She was without money and with no real roof over her head.

   她身無分文，也無家可歸。

raise the roof

1. 大發雷霆
   Father will raise the roof when he hears what you've done.

   父親要是知道你所做的事一定會大發雷霆。

under one's roof

1. 在家裡
   I refuse to have such goings-on under my roof.

   在我家裡不准有這種行為。

under the same roof

1. 在同一間屋裡
   She and I can't live under the same roof.

   她跟我沒法待在一起。

• go through the roof
  informal (of prices or figures) reach extreme levels.
• hit (or go through) the roof
  informal suddenly become very angry.