http://www.englishforums.com/English/EslGeneralEnglishGrammar-Questions/Forum12.htmAsk your questions on grammar and get your sentence checked. We answer lots of different types of general English grammar questions here. <font color=red>DO NOT post paragraphs and compositions here. Post them in our <a href="http://www.englishforums.com/English/EssayReportCompositionWriting/Forum9.htm"><b>Essay, Report and Composition Writing Forum</b></a>.</font>enXMOD (Build: 3614.32638)http://www.englishforums.com/English/CanCouldAndMayHelp/wpgjc/post.htm#743841Sat, 23 May 2009 11:02:28 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:743841Elida0http://www.englishforums.com/English/CanCouldAndMayHelp/wpgjc/post.htm#743841http://www.englishforums.com/English/comments12-743841.xmlAs far as I know, &quot;could&quot; is used in a polite way and more formal, unlike &quot;can&quot;http://www.englishforums.com/English/CanCouldAndMayHelp/wpgjc/post.htmSat, 23 May 2009 09:52:58 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:743752Aaron19881http://www.englishforums.com/English/CanCouldAndMayHelp/wpgjc/post.htmhttp://www.englishforums.com/English/comments12-743752.xmlI&#39;m quite confuse with the auxiliaries &quot;Can, Could, May, and others you can named it&quot;. I will list a few examples. Could you do me a favor? Can you do me a favor? May I go back home early today? Can I go back home early today? Could I go back home early today? Could we use your pool? Can we use your pool? May we use your pool? I was told that &quot;may&quot; is used when asking for permission, however a lot of situations also seems like asking for permissions as well. Can anyone clarify for me? Emm.. perhaps could anyone clarify for me?