这样做你想要什么？

Sub ImportData()

Dim wb1 As Workbook
Dim wb2 As Workbook
Dim Sheet As Worksheet
Dim PasteStart As Range

Set wb1 = ActiveWorkbook
Set PasteStart = [RRimport!A1]

FileToOpen = Application.GetOpenFilename _
(Title:="Please choose a Report to Parse", _
FileFilter:="Report Files *.xls (*.xls),")

If FileToOpen = False Then
    MsgBox "No File Specified.", vbExclamation, "ERROR"
    Exit Sub
Else
    Set wb2 = Workbooks.Open(Filename:=FileToOpen)

    For Each Sheet In wb2.Sheets
        With Sheet.UsedRange
            .Copy PasteStart
            Set PasteStart = PasteStart.Offset(.Rows.Count)
        End With
    Next Sheet

End If

    wb2.Close

End Sub