PartBLet'stalkLet’scleantheclassroom.Ok好let’s=letus让我们cleantheboardLetme让我擦黑板吧。让我Letmecleanthewindows让我擦窗户吧。Letmecleantheteacher’sdeskOk好cleanthedoorLetmeGoodidea!\OK!好主意LetmesweepthefloorLetme...Letmehelpyou.让我帮助你吧。Thankyou.谢谢你。Let’sgogotoschoolcleantheboardwindowteacher’sdeskdoorclassroomdesksandchairs点拨：1.Let’scleantheclassroom.意思是“让我们打扫教室吧。”建议对方去做某事，其否定句为：Don’tlet’scleantheclassroom.或Let’snotcleantheclassroom.2.Goodjob!“做的不错！”用于表扬对方，对对方工作的肯定和赞扬。
