I’m writing for being the volunteer in EIL International English Summer Camp during this holiday.这句话有错吗?

I’m writing for being the volunteer in EIL International English Summer Camp during this holiday.这句话有错吗?
I’m writing for being the volunteer in EIL International English Summer Camp during this holiday.
这句话有错吗?

I’m writing for being the volunteer in EIL International English Summer Camp during this holiday.这句话有错吗?
I’m writing to apply for a volunteer in EIL International English Summer Camp during this holiday.
我觉得这样会好些

翻译起来是：我写此信是志愿者在面纱国际英语夏令营期间的节日。
接下来自己琢磨了...