初学者求教大神帮忙啊

菜鸟求教大神帮忙啊！
unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls,DBCtrls;

type
  TForm1 = class(TForm)
  Button1: TButton;
  Button2: TButton;
  Label1: TLabel;
  procedure Button1Click(Sender: TObject);
  procedure Button2Click(Sender: TObject);
  private
  { Private declarations }
  public
  { Public declarations }
  end;

var
  Form1: TForm1;

implementation uses Unit2,Unit3

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);//',' or ';' expected but 'PROCEDURE' found
begin
Unit3.Form3.DBNavigator1.VisibleButtons:=[nbFirst,nbPrior,nbNext,
  nbLast,nbInsert,nbDelete,nbEdit,nbPost,nbCancel,nbRefresh];

Unit2.Form2.Show;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
Unit3.Form3.DBNavigator1.VisibleButtons:=[];
  Unit3.Form3.FormCreate(Sender);
  Unit3.Form3.Show;
end;

end.
第29行那个错误，我怎么看都是对的，可是就是编译不能通过，求教啊！
[Fatal Error] Project1.dpr(7): Could not compile used unit 'Unit1.pas'

[解决办法]
implementation uses Unit2,Unit3

这个后面少个;号好像,你加下试试