WebApi如何将一个模型调用另一个模型

目前正在接触webapi

现有两个MODEL，分别称之为Course和Student

Student如下所示

public class Student
{

public int Id { get; set; }
public string Email { get; set; }
public string UserName { get; set; }
        public int CourseId{get;set;}

}

Course如下所示
public class Course
{

public int Id { get; set; }
public string Name { get; set; }
        public string Teacher { get; set; }

}

我想生成以下结果

{
"Id": 1,
"Email": "a@a.com",

    "UserName": "Sa",
"Course": {
    "ID": 1,
    "Name": "Chinese",
                "Teacher": Lee,
}

}
我想通过ID作为关键字进行匹配，将Course表返回的结果作为Student表的一个子节点。Student表与Course表是一对多的关系，这意味着必须用list来存放数据，请指教

public class Student
{
    public int Id { get; set; }
    public string Email { get; set; }
    public string UserName { get; set; }
    public Course Course { get; set; }
}

public class Course
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string Teacher { get; set; }
}

        public JsonResult Test()
        {
            var model = new Student()
            {
                Id = 1,
                Email = "a@a.com",
                UserName = "Sa",
                Course = new Course()
                {
                    Id = 3,
                    Name = "Chinese",
                    Teacher = "Lee"
                }
            };
            return Json(model, JsonRequestBehavior.AllowGet);
        }