Currently Being ModeratedNov 15, 2012 11:33 AM (in response to xixichen)
Always go to the source. Ask in the Pages forum:
Currently Being ModeratedNov 16, 2012 4:39 AM (in response to xixichen)
There is also the paid Grammarian Pro application, which in my experience, is simply outstanding at grammar checking selected text or entire documents. Pages has Edit > Proof Reading, but it may be child‘s play compared to the dedicated Grammarian with multiple language dictionary support.