though的用法

　　例句：

　　He did reply, though not immediately.

　　他确实回复了，不过不是立马回复。

　　We are still friends, though, which is good.

　　不过我们仍然是朋友，这令人感到欣慰。

　　One major problem did present itself, though.

　　不过，确实出现了一个重大问题。