• Accent,Noise,Sound,Voice的区别
  
  accent,noise,sound,voice这组词都可表示“声音”。其区别是：
  sound的含义较广，指任何可以听到的声音；
  nose通常指令人不快的、混杂的或有害的噪音”；
  Voice着重指人的说话或唱歌的声音；
  accent则多指某人说话的口音”。
  例如：
  Sound travels at 1100 feet per second. 声音的传播速度是每秒钟1100英尺。
  Their washing machine makes a terrible noise。他们的洗衣机发出种令人讨厌的噪音。
  We could hear voices in the neat roon，我们能听见隔壁房间里的说话声
  He speaks English with a strong German accent。他说英语带有浓重的德国口音。
  测试:
  用 sound， voIce， noise或 accent填空

pronounce/pronunciation/announce/announcer/accent
记忆：
1. 词根nounce 表示声音。pronounce [ prE5nauns ]　　v. 发音, 宣告, 断言 Personally speaking, it’s good to pronounce correctly, however, it’s not necessary to try to pronounce so exactly as the native speakers. 我个人认为，正确发音是对的，然而没有必要设法与英美人发的一模一样。
2. pronunciation [ prE7nQnsi5eiFEn]　n. 发音 Your pronunciation is OK when you can make yourself understood orally. 如果你能用口语让别人明白你的意思，那么你的发音就不错。
3. announce [ E5nauns ] vt. 宣布, 通告 The president announced the war against Iraq. 总统宣布了对伊拉克的战争。
4. announcer [ E5naunsE ] n. 广播员, 告知者, 报幕员 The announcer must have a good pronunciation. 播音员一定要语音地道。
5. denounce [ di5nauns ] de-, 相反；vt. 公开指责, 公然抨击, 谴责 The public denounced his foreign policy. 公众抨击他的外交政策。
6. accent [ 5AksEnt ] ac-cent, n. 重音, 口音, 重音符 He speaks with a strong accent of Sichuan dialect. 他说话时带有很强的四川口音。
另类阅读：
Isn’t it abnormal that the announcer has made so many mistakes in her pronunciation today? She has a strange accent and should have pronounced the words correctly.