http://www.englishforums.com/search/pro.htm?q=tag%3aEnglish+vocabulary+tag%3aTenses&tag=English+vocabulary,Tenses&orTags=0Search results for 'tag:English vocabulary tag:Tenses' matching tags 'English vocabulary' and 'Tenses'en-USCSMOD (Build: 3191.21962)http://www.englishforums.com/English/PresentPerfectPresentPerfect-Progressive/cjvwz/post.htm#212556Wed, 05 Apr 2006 03:06:12 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:212556CalifJim1)&nbsp; I see no significant difference between your two sentences whether with live, work, or study.&nbsp; I would not assume anything with regard to English vocabulary and grammar!<br> <br> 2) To start with, I would say <i>... during the past ten years</i>.&nbsp; The second version (with the progressive tense) mixes two incompatible ideas.&nbsp;<i> has been flying</i> indicates an activity (no specific time limits).&nbsp; <i>over 300,000 miles</i> indicates an accomplishment (with time limits).&nbsp; The phrase <i>during ten years</i> doesn't come into it.&nbsp; The sentence seems wrong even without it.<br> <br> 3)&nbsp; I'm not sure what the question is.&nbsp; <i>... have been watching ...</i> is progressive (but not present progressive as you claim) because it has an <i>-ing</i> form.&nbsp; <i>... watched ...</i> is not progressive (although it is past as you claim) because it does not have an <i>-ing</i> form.<br> <br> CJ<br> <br>