1. How are you? --&gt;<br/><br/>2. How are you doing?<br/><br/>3. How's it going on?<br/><br/>I think the stress usually fall on 'you' in #1.<br/><br/>If the stress fall on 'how', what does it intend?(i.e., what's the difference when the stress falls on 'how', 'are' or 'you')<br/><br/>Where does the stress usually fall on #1,2&3?