burn up,burn off有什么区别，谢谢！

burn off 意为"烧掉, 蒸发"

burn 有两个基本含义："燃烧"和"烫伤、烧坏"

1) "燃烧；点燃；发光"

例句：我们烧煤取暖，她点燃了根蜡烛，他总是让灯通宵亮着。

2) "烧伤；烧焦；烫伤；晒黑"

例句：小心别烫了嘴，那小孩玩火时，把自己烧伤了，这座房子几年前全部烧毁了，戴上帽子，否则太阳会晒黑你的脸。

与burn搭配的常用词组包括：

1) 烧掉：Half of the candle had burnt away。

2) 渐渐烧完：The room groom grew colder as the fire burnt down。

3) 把……烧得精光：Don't forget to turn off the gas----you might burn the house down。

4) 烧得更旺：He put more wood on the fire to make it burn up。

5) 把……烧掉：He has burnt up all the garden rubbish。

4) 一些习语：

1) 破釜沉舟，不留后路："Think carefully before you resign----if you do that you will have burnt your boats"。

2) 开夜车，挑灯夜战："She will take her exam next week。She is burning the midnight oil"。

3) 觉得耳朵在发烧(猜想，认为有人在谈论自己)："feel one's ears burning"。