You're on fire是你着火啦？其实是在夸你呢！
看到这一令人叹为观止的景象，他激动万分。
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。
on fire 还有身体某部位火辣辣地疼痛的意思。
例句He couldn't breathe. His chest was on fire.
他无法呼吸。他的胸部火辣辣地疼痛。
My body seemed on fire and I could not sleep.
我全身如火般滚烫,无从休息。
着火除了 on fire 之外，还有一个常见短语 catch fire ，不过前者表示状态，后者更侧重于动作。 例句These thatched roofs frequently catch fire.
这些茅草屋顶屡屡着火。
I told you, it doesn't catch fire.
我告诉过你，它不会着火。
Fire 相关常见俚语1.Play with fire 字面意思：玩火；引申义：冒险或者不理智的行为。 例句
He asked the children not to play with fire in the forest.
他叫小孩们不要在森林中玩火。
" Don't play with fire!" the teacher said to the students.
“不要玩火！”老师对学生说。
2.fight fire with fire 字面意思：以火攻火；引申义：以其人之道还治其人之身。 例句The only way he could beat his opponent was to fight fire with fire and be equally aggressive.
他要想打败对手，唯一的方法就是以牙还牙，和对方一样大胆进攻。
17 Kurosawa's peasants decided to fight fire with fire.
黑泽明电影中的农民决定以其之道还治其身。
3.get on like a house on fire 字面意思：像房子着火一样相处；引申义：很快就打得火热，一见如故。 例句 We got on like a house on fire. I wasn't sure my little brother and my boyfriend would like each other, but they actually get on like a house on fire.
我之前不确定我弟弟和我男朋友会不会合得来，但实际上他们一见如故，相处得很好。
I'm not sure we have much in common, but I'm sure when we get to know each other, we'll get on like a house on fire.
我不敢说我们有很多共同点，但我确信在我们相互了解之后，我们会相处得很好。
4.no smoke without fire字面意思：无火不起烟；引申义：无风不起浪。
例句 As the saying goes, 'There's no smoke without fire.'俗话说，“无风不起浪。”
Look, he's a nice guy, but there's no smoke without fire.
瞧，他是个不错的小伙子，但是无风不起浪呀。
