方法：
选择【视图】，【宏】，设置宏的名称，点创建
将下列函数复制到宏中，在ppt中先选择某个要删除的对象，然后运行宏即可
函数内容如下
Sub Delete( )
Dim oSlide As Slide, oShape As Shape
Dim myWidth As Single, myHeight As Single, myTop As Single, myLeft As Single
On Error Resume Next
If ActiveWindow.Selection.ShapeRange.Count <> 1 Then
If Err.Number <> 0 Then
MsgBox "none" & vbCrLf & "choose one", vbExclamation + vbOKOnly
Err.Clear
Exit Sub
End If
MsgBox "choose exceed 1" & vbCrLf & "choose one", vbExclamation + vbOKOnly
Exit Sub
End If
Set oShape = ActiveWindow.Selection.ShapeRange(1)
myTop = oShape.Top
myLeft = oShape.Left
myHeight = oShape.Height
myWidth = oShape.Width
For Each oSlide In ActivePresentation.Slides
For Each oShape In oSlide.Shapes
If Abs(myTop - oShape.Top) < 1 And Abs(myLeft - oShape.Left) < 1 And Abs(myHeight - oShape.Height) < 1 And Abs(myWidth - oShape.Width) < 1 Then
oShape.Delete
End If
Next
Next
End Sub