burn的過去式？

　　burn雙語例句

　　Without it, the sun would burn us up .

　　如果沒有它，太陽就會(huì)把我們燒盡。

　　Why do some people tan and others burn?

　　為什么有些人曬黑和其他燃燒？

　　All their lights are on, upstairs and down, as if they have money to burn.

　　他們的燈都亮著，不管樓上還是樓下，似乎他們有的是錢可以燒。