To be honest I've not noticed it myself, but if you would rather Word didn't check your grammar you can turn it off by going to File > Options > Proofing.
If you want to get to the root of the problem, you could try contacting Microsoft about it?
@Becky is right when she says that you can customize the grammar corrections in new versions of Word.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.