Can you explain about the expression "as ~ as"?
The structure "as...as" is used when comparing two things. This can be used in many different contexts. Ex: She is as strong as a horse. Ex: I don't have as many books as her. Ex: The test wasn't as hard as I thought. Here, "as many as you can" also indicates ability. Any time a word describing ability is put after the structure "as...as", it is used to show possibility of something, and it compares the subject with what is possible for the subject to do. Ex: Eat as much as you can. Ex: He wants to see as many places as he can. Ex: We ran as fast as we could to get there.