Basic English Grammar Questionshttp://www.englishforums.com/English/BasicEnglishGrammarQuestions/Forum43.htmFor Basic English ONLY. Please post only <b><font color=red>easy</font></b> questions and answers here.enXMOD (Build: 3616.28671)Re: has or havehttp://www.englishforums.com/English/HasOrHave/grpqp/post.htm#505767Thu, 26 Feb 2009 13:01:25 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:505767Philip0http://www.englishforums.com/English/HasOrHave/grpqp/post.htm#505767http://www.englishforums.com/English/comments43-505767.xmlWhen using could, would, will, might, did(n&#39;t), should , the bare infinitive is used.has or havehttp://www.englishforums.com/English/HasOrHave/grpqp/post.htmSun, 26 Apr 2009 12:01:25 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:505748Trouper1http://www.englishforums.com/English/HasOrHave/grpqp/post.htmhttp://www.englishforums.com/English/comments43-505748.xmlDear respectable English experts, Please check the following sentence and explain your answer: &quot;Where was jack yesterday?-He might have been seeing the doctor.&quot; I&#39;m over-confidant that this sentence is correct but why not &quot;He might has been seeing the doctor.&quot; Thank you All the best to you, Alex