You ask others for help when you can't correct your own mistakes.

当你不能改正自己的错误时，你请求别人的帮助。

youdao

If you ask him, he will help you.

假如你向他请求，他会帮助你。

《新英汉大辞典》

If you use tobacco, ask your doctor to help you quit.

如果你有使用烟草，请咨询你的医生帮助你戒掉。

youdao

What I'm going to ask you to do Andrew Low is to help me develop ways to improve the Andrew Low course.

你们的任务就是,探索改进,课程的新方法。

麻省理工公开课 - 媒体、教育、市场课程节选

If they can't help you out, then you go to your professor and you ask them.

如果他们帮不上忙，你就去找教授，问教授。

学习和交际都重要 - SpeakingMax英语口语达人

I'm gonna ask you to find resources that help inform your opinions about how we can do a better job of building a better learning community.

你们要搜索资料,以便于阐述关于,如何更好地,构建学习社群的观点。

麻省理工公开课 - 媒体、教育、市场课程节选

As Michelle said, you've got to ask questions, you've got to ask for help when you need it.

WHITEHOUSE: Celebrating National Mentoring Month

So I ask you to help us make sure that the reality and the myths are explained.

WHITEHOUSE: La reforma acabar�� con "el racionamiento", no lo aumentar��

If I ask you to help me, you can refuse and I will find others who will help me.

NPR: Robert Jordan, Hemingway's Bipartisan Hero