放火
set fire───纵火，放火烧
set-off───n.突出部；断开，断流；凸缘
set off───v.出发；引起；动身；使爆炸；抵销；分开；出发；动身；启程
set up fire───放火
set on fire───焚烧；使情绪激昂；使燃烧; 使情绪激动; 放火; 燔
set fire to the floor───放火烧地板
set the world on fire───非常成功；一鸣惊人；<口>极为成功并引起轰动
set off for───出发；开始；赛跑；动身前往
set fire to the rain───以火焚雨（歌曲名，SetFiretotheRain）
As I cooked, the smoke set off the fire alarm.───当我做饭时，烟引起了火警。
He accidentally set off the fire alarm.───他意外地触动了火灾警报器。
Who set off the fire alarm?───谁拉响了火警报警器？
If you will pardon so commonplace a simile, we have set off the fire alarm and have nothing to do but to wait.───原谅我使用这么俗套的比喻吧，我们点燃了烽火，接下来所能做的就只有等待了。
The owner accidentally set off the fire bell, and two fire engines arrived.───主人偶然碰响了火警铃，结果来了两辆救火车。
It was only the spark that set off the fire.───只是一个火星引起了这场火灾。
Who set off the fire alarm?
The owner accidentally set off the fire bell, and two fire engines arrived.
The biggest excitement of the day was when Joe accidentally set off the fire alarm.
Someone set off the fire alarm .
Someone accidentally set off the fire alarm.