beconcernedwith和about的區(qū)別

　　例句：

　　The soldiers concerned were unarmed at the time.

　　有關(guān)士兵當(dāng)時(shí)未攜帶武器。

　　He knew her weak spot where Steve was concerned.

　　他了解她在與史蒂夫有關(guān)事情方面的缺點(diǎn)。

　　He didn't seem in the least concerned for her safety.

　　對(duì)她的安全他似乎一點(diǎn)都不擔(dān)心。