教弟弟放烟花英语怎么说

Teach your younger brother to light fireworks.

"Light fireworks" is the most common way to say it in English. This phrase comes from the fact that fireworks are typically lit with a match or lighter, and "light" means to set something on fire.

Here are some example sentences using this phrase:

I'm going to teach my little brother how to light fireworks safely.
My cousin showed me how to light fireworks when I was a kid.
We lit the fireworks together on the Fourth of July.

In Chinese, you could say something like "教你弟弟如何安全地放烟花" (jiào nǐ dìdì rúhé ānquán de fàng yānhuā) to mean "teach your younger brother how to light fireworks safely."