面壁 = 面对墙壁
思过 = 思考过错
这个成语是指一个人犯了错，面对着墙壁来反省自己的过错。
面壁思过 literally means face the wall and ponder about one’s mistakes. It also means standing in front of a wall as a punishment. Facing the wall makes a person focuses on his / her conscience and thus hopefully he / she will remorse and turn over a new leaf.
另一个成语，闭门思过，是指一个人关起门来反省自己的过错。
造句：
1。学华文学了这么多年，却不知道怎么写这么简单的字，我应该好好地面壁思过了。
2。弟弟把玻璃杯打破了，爸爸罚他面壁思过。
Facing the wall, thinking about the mouse that I have eaten — 面壁思过
