sb是什么的縮寫

　　例句：

　　1、Has somebody helped himself to some film star's diamonds?

　　有人偷了某個影星的.鉆石了嗎?

　　2、Somebody else lent me a pump and helped me mend the puncture.

　　別人借給我一個打氣筒，又幫我補好了輪胎。

　　3、If I reduced somebody to tears I'd be mortified.

　　如果我把誰弄哭了，我會尷尬的。

　　4、Somebody hired from another country is not likely to resign precipitately.

　　外國雇員不可能貿然辭職。