EF的连表查询Lambda表达式

var lst = from c in db.Blogs join p in db.Posts on c.Id equals p.BlogId where p.Id==1 select c;
var lst1 = db.Blogs.Join(db.Posts.Where(p=>p.Id==1), b=> b.Id, p=> p.BlogId, (b, p) => new {b});

 public class Blog
 {
    public int Id { get; set; }
    public string Title { get; set; }
 }

 public class Post
 {
    public int Id { get; set; }
    public string Title { get; set; }
    public int BlogId { get; set; }
 }