ph.

1. Paper catches fire easily.
纸易燃。

1. 着火：----------我认为你的改法不可以,着火(catch fire)是一瞬间的事情,而且它也用了Suddenly来提示你这个动作的瞬时性,这肯定是过去的已经发生的事情了,不能用进行时.

2. 着火,烧着：catch at 想抓住;立即接受 | catch fire 着火,烧着 | catch on 理解,明白,变得流行

3. 着火;开始燃烧：wire n.电缆;电线;金属丝 | catch fire 着火;开始燃烧 | container n.容器;集装箱

4. 着火,引起火灾：The man refused to carry out the captain's orders.那人拒绝执行队长的命令. | catch fire着火,引起火灾 | A small cigarette may catch big fire.一支小小的香烟或许引起一场火灾.

verb

1. start to burn or burst into flames

e.g. Marsh gases ignited suddenly
The oily rags combusted spontaneously

Synonym: eruptignitetake firecombustconflagrate