<u><b>Sentence:</b></u> "I cannot believe this." <b>And</b> "I could not believe this."<br/><br/>What is the/a(?) difference between these two sentences?<br/><br/>Thanks and regards <img class='emoticon' style='Width:19px;Height:19px;' data-delaysrc='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/1.gif' src='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/1.gif' alt='Emotion: smile'/>