英語三級每日口語(6.10)：Are you by yourself?

Are you by yourself?
    你一個人來嗎？
    今天的幾個句子是有關問詢的：
    1.Can you settle it by yourself.
    請自行解決。
    2.You can study by yourself.
    你可以自學。
    3.Are you traveling by yourself?
    您是一個人旅行嗎？