请问：“以……做抵押”用英文怎么表达~

take sth.as mortage

以……做抵押
take sth as hostage
offer sth as a guarantee

公司把汽车当做抵押品
The company took the cars as hostage

你用什麽做抵押?’‘我可以拿房子抵押.’
`What guarantee can you offer?' `I can offer my house as a guarantee

mortgage
及物动词，t不发音
【'mo:gidg】