Grammar

[littleblossom]

Hi there newbie here
This is so basic Im rather embarassed posting it
My partner has started writing again and I proof read his stuff. On my new laptop I have Microsoft Word Starter 2010.
The problem is I correct the grammar, save, but the corrections come up again the next time I open the document.
I started off clicking on 'ignore once', then tried clicking on 'ignore rule', neither of which work, (if someone could also explain the 'ignore rule' Id be grateful!)
Help!