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高考 CET-4 CET-6 考研 TOEFL BNC: 1879 COCA: 2135
roof noun | verb
 1 
roof / ruf ; ru:f /noun C
1. the structure that covers or forms the top of a building, vehicle, tent etc屋顶; 车顶; 帐篷顶:
They finally found the cat up on the roof.他们最后在屋顶上找到了那只猫。
[+ of ]
We can probably strap the cases to the roof of her car.我们也许可以把箱子捆在她的车顶上。
slate / tiled / thatched etc roof石板瓦/瓦片/茅草等屋顶
a flat roof平顶
a pitched roof (=sloping roof)斜顶
red-roofed / metal-roofed etc
a wooden-roofed theatre木屋顶的戏院;
picture on page A11
2. the top of a passage under the ground〔地下通道的〕顶部; 天花板:
Suddenly, the whole tunnel roof caved in.突然间,整条隧道的顶部塌陷了。
3. a roof over your head somewhere to live栖身之所:
I may not have a job, but at least I've got a roof over my head.我可能没有工作,但我至少还有个住的地方。
4. go through the roof informal
a. also hit the roof to suddenly become very angry暴跳如雷,火冒三丈:
Put that back before Dad sees you and hits the roof!赶紧放回去,免得爸爸看见了大发雷霆!
b. if a price, cost etc goes through the roof, it increases to a very high level〔价格〕飞涨
5. the roof of sb's mouth the hard upper part of the inside of your mouth上颚
6. under the same roof / under one roof in the same building or home在同一屋檐下:
If we're going to live under the same roof , we need to get along.我们要想住在同一个屋檐下,就得和睦相处。
Here you can buy food, clothes, and electrical goods all under one roof.就在这一家店里你可以买到食物、衣服和电器。
7. under sb's roof spokenin your home在某人的家里:
As long as you live under my roof, you'll do as I say.只要你住在我家里,就得照我说的办。
8. the roof falls / caves in informal especially AmEif the roof falls in or caves in, something bad suddenly happens to you when you do not expect it飞来横祸; 突遭不幸
raise the roof at RAISE¹ (23)
SUNROOF
 2 
roofverb T usually passive
1. to put a roof on a building给〔建筑物〕盖屋顶:
be roofed with sth
a cottage roofed with the local slate用当地的石板瓦做房顶的小屋

 PHRASAL VERBS 
roof sth ↔ in / over
BrEto cover an open space by putting a roof over it
给〔空地〕加顶:
We're going to roof in the yard to make a garage.我们打算给院子加个顶当车库。

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