我将请我的导师为我写推荐信.(reference) 翻译成英文

ask不行，不能用，用pray
楼上某楼的，ask你导师礼貌否？

I'll ask my professor for a reference letter.
I will request a recommendation letter from my professor.
I will request my tutor for a letter of recommendation.
request =to officially ask for something 比较礼貌，正式

二楼是对的，用ask够了

I will ask my tutor to write a reference letter for me.

I will pray my teacher to write a recommendation for me.
pray sb. to do sth.
请求某人做某事

I will ask my instructor to write a letter of recommendation.
You only pray to God.