由“let”开头的祈使句是个常见的动词句型，它的主要用法有下列三种，“let”后头紧跟着一个第一人称的代词宾语，如：let me try. Let's do it. Let me go. let sb.do sth. “让某人做某事”如：Let's have a break. It's time for the class. Let's go to the classroom.