为何

我不明白他为何搞这样。

我不明白他爲何搞這樣。

I have no idea why he did that.

为何人会笑，这个问题是一个很难解决的问题。

爲何人會笑，這個問題是一個很難解決的問題。

Why do humans smile? This is a very difficult question to answer.

为何大声喧嚷？

爲何大聲喧嚷？

Why are you speaking loudly?

Junior，我们为何不一起加入同一个小组呢

Junior，我們爲何不一起加入同一個小組呢

Junior, why don't we go into a group together?

如果你不忙，这周末为何不来跟我钓鱼呢？

如果你不忙，這週末爲何不來跟我釣魚呢？

If you are not busy, why don't you come fishing with me this weekend?