居然

1. unexpectedly; actually; to one's surprise

♦ 真没想到他~会做出这种事来。 Who would have thought he could do such a thing?

♦ 你怎么~相信这种谣言？ How could you believe such a rumour?

2. go so far as to

♦ ~当面撒谎 go so far as to tell a bare-faced lie