多久

• How much longer are you thinking of staying there ?
  你还准备在那儿呆多久？
• How far does your memory go back ?
  你能回忆起多久以前的事情？
• I am ill, and at the best have not long to live .
  我病了，怎么也活不了多久。
• How long will this ability persist ?
  这种能力还能维持多久？
• Well , how long have you studied english ?
  你学英语多久了？
• How long does it take to get to tamsui by bus ?
  搭公共汽车到淡水需要多久时间？
• How long can you hold your breath for ?
  你能屏住呼吸多久？
• How long will you be staying in paris ?
  你在巴黎要呆多久？
• "how long will the rice shortage go on, yusef? "
  米荒还要继续多久啊，尤塞夫？
• He could be big in no time .
  用不了多久他就能成个大人物。