You are sitting in the dental chair, waiting for the dentist to examine your teeth.
      A: When did you last have your teeth cleaned?
      B: About six months ago.
      A: Hm...your teeth look pretty good, but there's quite a bit of plaque behind your front teeth and around your back teeth. Do you floss every day?
      B: No, I just don't like flossing.
A: Have your gums been bleeding a lot lately?
B: Yes, they have. Did you notice the black spot on my right molar.
A: Yes, I do see a small cavity there. I'll have to take an x-ray and make another appointment to fill your cavity.
B: I haven't had a filling before. Will it hurt?
A: No, I'll freeze it, so you won't feel any pain from the drill.
B: Good. Will I still have my teeth cleaned today?
A: Yes, my dental hygienist will clean them now, and give you some new ideas on flossing.
B: Thanks.

　　你坐在牙醫的病人椅子上，等候牙醫替你檢查牙齒。
      甲：你上次洗牙是什麼時候呢？
      乙：約六個月前。
      甲：唔……你的牙看來相當好，但門牙背後和後面的牙齒週圍有好些牙石，你有每天用牙線嗎？
      乙：沒有，我不喜歡用牙線。
      甲：你的牙肉最近有經常流血嗎？
      乙：有。你有留意到我右邊臼齒有一點黑嗎？
      甲：有，我見到那裏有一小洞，我會替你照X光，然後再另約時間替你補牙。
      乙：我從未補過牙，會痛嗎？
      甲：不會，我會冷凍那牙齒，那麼你便不會在鑽牙時覺得痛。
      乙：那就好了。我今天仍可以洗牙嗎？
      甲：可以，我的牙科護理員現在會為你洗牙，並告訴你一些用牙線的新方法。
      乙：謝謝。

      Language Notes
      語文註解：
      (1) Have your teeth cleaned——洗牙。
      (2) Plague——牙石。
      (3) Floss——Floss牙線本來是一個名詞(Noun)，但在這作動詞(Verb)用 ，指用牙線清除牙縫中的殘余食物。
      (4) Gum——牙肉。
      (5) Bleeding——流血。
      (6) Lately——最近。請留意late和lately在意思上是有很大分別的。
      (7) Molar——臼齒。
      (8) Cavity——牙洞。
      (9) Take an x-ray——照X光。
      (10) Make another appointment——另約時間。
      (11) Have a filling——補牙。
      (12) Freeze——冷凍令肌肉麻木。
      (13) Drill——此處解鑽牙。
      (14) Dental hygienist——牙科護理員。