01There's more to it than meets the eye
Used to say that something appears simple on the surface but is actually more complex or significant than it first seems.
The case looked like a straightforward accident, but the detective felt there was more to it than meets the eye.
A: Why are you spending so much time on that old painting?
B: I don't know — there's just more to it than meets the eye. Look at the background detail.
02Go back and forth
To keep moving between two positions or options without reaching a conclusion; also used to describe an ongoing exchange between two people.
We went back and forth on the budget for weeks before finally agreeing on a number.
She's been going back and forth about whether to move — one day she's ready, the next she's not.
03Let it sink in
To give yourself (or someone else) time to fully understand or absorb something surprising or significant.
She just sat quietly for a moment, letting the news sink in.
A: So you actually got the promotion?
B: I did. I'm still letting it sink in, to be honest.
04Take it at face value
To accept something as it appears, without looking for a deeper meaning or questioning whether it is genuine.
His apology seemed sincere, so I decided to take it at face value.
A: Do you think she really meant what she said?
B: I think so. I'd just take it at face value — she has no reason to be dishonest.