1. you are working hard today. (the speaker thinks that "today" is the time around now)<br/><br/>2. you have been working hard today. (the speaker thinks that "today" is ???)<br/><br/>3. you were working hard today. (the speaker thinks that "today" is finished)<br/><br/>In second sentence, actually what are the speaker thinking about "today"?<br/><br/>Is the speaker considering "today" as unfinished in 2nd sentence?<br/><br/>thanks no end.<br/><br/>I am not an English native.