As Graham says, it can't be done. You may be able to meet your objective of
instructing your children by temporarily tagging these errors in a slightly
different manner.
If you run the following macro to print the document, it will temporarily
mark spelling error is in red text underlined with a red wavy line and
grammatical errors shaded in light green.
Sub TagProofreadingErrors()
Dim oSPerror
Dim SPerrors
Dim oGRerror
Dim GRerrors
Set SPerrors = ActiveDocument.SpellingErrors
Set GRerrors = ActiveDocument.GrammaticalErrors
For Each oSPerror In SPerrors
With oSPerror.Font
.Color = wdColorRed
.Underline = True
.Underline = wdUnderlineWavy
End With
Next oSPerror
For Each oGRerror In GRerrors
oGRerror.Shading.BackgroundPatternColor = wdColorLightGreen
Next oGRerror
ActiveDocument.PrintOut
For Each oSPerror In SPerrors
With oSPerror.Font
.Color = wdColorAutomatic
.Underline = False
End With
Next oSPerror
For Each oGRerror In GRerrors
oGRerror.Shading.BackgroundPatternColor = wdColorAutomatic
Next oGRerror
End Sub
While Word in many cases will isolate and flag a specific grammatical error.
For example it will flag "is" in the following sentence:
Bill and Mary is working in the yard.
.... the code above will flag the entire sentence containing the error. If
it is possible to isolate the single error then I don't know how to do it.
You may need to modify the code slightly if your existing font color,
underline scheme or shading conflicts with what I provided.
For help installing and using the macro see:
http://www.gmayor.com/installing_macro.htm