Hi, <br/>I'm wondering what function the word, 'unlocked' has in the following sentence:<br/><br/>'Never leave your car unlocked in a shopping centre car park.'<br/><br/>I know it's the past participle, but is it in tense form, or just part of the subject?<br/><br/>Thanks.<br/>Cup Cake. <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'/>)