英語三級每日口語(8.5)：How long are you going to stay here

How long are you going to stay here?
    你要在這里停留多久？
    今天的幾個句子是有關旅行的：
    1. What's the purpose of your visit?
    你旅行的目的是什么？
    2. Could you please give me the departure time?
    你能告訴我出發(fā)時間嗎？
    3. When would you like to return?
    你打算何時回來？