I looked around to see who the speaker was.

　　我四下環(huán)顧看說(shuō)話(huà)的是誰(shuí)。

　　The speaker worked the crowd up into a frenzy.

　　演講者把聽(tīng)眾的情緒煽動(dòng)得瘋狂起來(lái)。

　　She listened to the speaker with rapt attention.

　　她全神貫注地聽(tīng)演講者講話(huà)。