To impress upon her how much she had to learn?

"We need to impress upon them how important they are to us."

I don't know what more we can do to impress that upon him.

Let me impress upon you what so few people in this country seem to understand.

I sat there for three hours, and his face was impressed upon my memory.

His mother was a teacher, and she impressed upon her children the importance of a good education.

What I'm going to impress upon them is that it's important to get off to a good start.

He had impressed it upon her that on no account must they be late.

I can't impress upon you enough how dangerous these men are.

He had impressed that point time and again upon his crew.