1. on fire着火，发火，发怒，有烧灼感，情绪激昂
Look, the car is on fire!
看，车着火了！
The house was on fire for nearly an hour before the fire department finally arrived.
房子着火将近一个小时，消防队才赶来。
Protesters set cars on fire and burned a building.
抗议者们焚烧汽车，烧毁了一栋建筑。
Retreating soldiers were dousing homes and shops with petrol and setting them on fire.
撤退的士兵把汽油浇到住宅和商店上，并放火焚烧。
set something on fire纵火
set sth. on fire = set fire to sth
A candle had set the curtains on fire.
蜡烛把窗帘燃起来了。
Groups of rioters attacked and set the office on fire.
成群的暴徒发起了攻击，并且在办公室纵火。
Rioters set fire to parked cars.
暴徒放火焚烧停着的汽车。
One prisoner set fire to rags and hurled them into the courtyard
一名囚犯将破布点着，扔进院子。
Demonstrators turned on police, overturning vehicles and setting fire to them
示威者攻击警察，推翻车辆并将其纵火焚烧。
The invaders wantonly set fire to Yuan Ming Yuan.
侵略者恣意妄为，把圆明园付之一炬。
Dozens of people have been injured and many vehicles set on fire
很多人受了伤，多辆车起火。
Lightning set several buildings on fire.
闪电燃着了几栋大楼。
When she was 8, her house caught on fire.
8岁时,她家的房子着火了。
My legs are on fire after that workout!
运动之后，我的腿有一种灼烧感。
He couldn't breathe. His chest was on fire.
他无法呼吸。他的胸部火辣辣地疼痛。
About 650 wells are on fire.
大约650个油井起火。
Women were screaming; some of the houses nearest the bridge were on fire
女人们在尖叫；离桥最近的几所房屋起火了。
A post office was set on fire and vehicles were stoned by looters.
抢劫犯放火烧了一家邮局，并用石头砸车。
This building is on fire, you must evacuate immediately.
这座楼着火了，大家必须立即疏散。
Some of the houses nearest the bridge were on fire.
离桥最近的一些房屋着火了。
He's never going to set the world on fire with his paintings.
他的绘画永远不会引起轰动。
He was on fire with this marvelous sight.
看到这一令人叹为观止的景象，他激动万分。
The breathtaking potentialities of mechanization set the minds of manufacturers and merchants on fire
机械化的惊人潜力使制造厂和商人们激动不已。
On fire is used when someone is doing great and they are unable to be stopped.
on fire可以表示这个人现在精力非常旺盛，干事情神勇无比，势不可挡。
Tom has scored eight goals, man, he is on fire today!
Tom已经进了八个球了，天哪，他今天超级神勇啊！
He is one fire.他好神勇。（他真的好厉害。）
The team has been on fire lately, winning 11 of its last 12 games.
这支队伍最近状态非常好，赢下了12场比赛中的11场。
2. on the fire在火上，在火炉上，在考虑中，在审议中，在准备中
She crumpled the letter up into a ball and threw it on the fire.
她把那封信揉成一团扔进了火里。
Reggie threw more wood on the fire and poked at it.
雷吉又往火上扔了些木柴。
Don't forget to cast more wood on the fire.
别忘了往火堆里加木块。
Actually we were pouring oil on the fire and making matters worse.
实际上我们是在火上浇油，把事情弄得更糟。
The young writer has a new novel on the fire.
这位年轻的作家正打算写一篇新小说。
Who will attend the meeting is on the fire.
参加会议的人选还未决定。
Where we will have the party is on the fire.
我们在什么地方聚会还未决定。
Your suggestion is on the fire.
你的建议正在被考虑之中。
The firefighter put out the fire in five minutes.
消防员花了五分钟就扑灭了火。
fire crews refused to cross the picket line.
消防队员拒绝越过警戒线。
关于fire的两个谚语：
(There's) no smoke without fire.无风不起浪。
A rumour circulated in the press about the royal couple, and two weeks later it was confirmedwhen they announced their divorce. There's no smoke without fire.
报刊上流传起关于这对皇家夫妇的传闻，两周后得到证实，他们宣布离婚，真是无风不起浪。
Go through fire and water.赴汤蹈火。（历尽艰辛。）
I feel like we had to go through fire and water to get here, since all of our flights were either delayed or canceled.
我们可能要历尽艰辛才能到那儿，因为所有的航班不是延误了就是取消了。
fight fire with fire以牙还牙，以毒攻毒，以彼人之道，还治彼人之身
Some people are so belligerent that to fight fire with fire seems the only way to deal with their enemies.
一些好战者认为以牙还牙是对付敌人的唯一方法。
get on like a house on fire很快就打得火热；一见如故
I like to visit my neighbor because our two children get along like a house on fire.
我要去拜访一下邻居，我们的两个孩子一见如故。
