您要查找的是不是：
- 吗 morphine
- 你完全肯定吗? Are you quite sure?
- 肯定吗? Positive?
- 这事你肯定吗? Are you sure about that?
- 这事你能肯定吗? Are you sure about that?
- 马克：你可以肯定吗? Mark: Are you sure about that?
- 是吗 is that right
- 可以吗？ Any chance?
- 你好吗？ How are you?
- 对吗 is it right
- 你肯定吗?记忆也会捉弄人的。 Are you sure?Memory can play tricks on you.
- 你知道吗 did you know
- 是吗？ Is it really?
- 不是吗 isn't it
- 真的吗？ No kidding?
- 行吗 all right
- 这样可以吗？ Is that OK?
- 汉斯先生在吗？ Be Mr. Hay in?
- 你还记得我吗？ Do you remember me?
- 有事吗 what can I help you
