Sometimes, I 'm usually confused about the difference of the date's range between <i><u><b>in</b> </u></i>and <b><i><u>within </u></i></b>/ <b><i><u>in</u> </i></b>and<b><i><u> after</u></i></b><br/><br/>i'd like you to explain them by giving a example with a specific date<br/><br/>Case1= This project could be done <i><u><b>after</b></u></i> a month.<br/><br/>Case2- This project could be done <i><u><b>in</b></u></i> a month.<br/><br/>Case3= This project could be done <i><u><b>within</b></u></i> a month.<br/><br/>---------------------------------------------------------<br/><br/>Please correct me if i'm wrong.