刚开始接触bootstrap,好心人帮我看看这是什么问题

 <!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <title>Admin Login</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet" />

  </head>
  <body>
    <h1>你好，世界！</h1>

    <form class="form-horizontal">
      <div class="control-group">
        <label class="control-label" for="inputEmail">Email</label>
        <div class="controls">
          <input type="text" id="inputEmail" placeholder="Email">
        </div>
      </div>
      <div class="control-group">
        <label class="control-label" for="inputPassword">Password</label>
        <div class="controls">
          <input type="password" id="inputPassword" placeholder="Password">
        </div>
      </div>
    </form>

    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="js/jquery-2.0.3.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="js/bootstrap.min.js"></script>
  </body>
</html>

为什么显示的结果不在同一行里面
图片说明

谢谢，在线等~

参见样式设置
http://v3.bootcss.com/css/#forms

想要的结果如下图所示
图片说明

谢谢 danielinbiti

配合栅格来做就可以实现！