OnePossibleVersion:

　　Goodmorning,everyone!TodayI'mgoingtotalkaboutinventions.

　　Inventionsarecreatedeverydaybecausepeoplewouldliketomakelifeeasier.TherearefamousinventionsliketheTVandthebicycle.TVprovidesuswithdifferentkindsofinformationsothatwecanknowmoreabouttheworld.Wewatchentertainmentprogramstorelaxourselves.Besidessomelearningprogramshelpuswithourstudy.

　　Thebicycleisveryuseful,too.Wegotoschoolorworkbybike.It'snotexpensivethatmostofuscanaffordit.Itmakesnopollution,whichisgoodforourenvironment.What'smore,bicycleridingisakindofexcitingsportswhichisquitegoodforourhealth.

　　Thoughtherehavebeenmanygreatinventions,Iwishtoinventakindofpenwhichcanhelpuswritemorequicklyandneatly.Whenwemeetproblemsindoingourhomeworkortakingexams,itwilltellushowtosolvethem.

　　That'sall.Thankyouverymuch.

　　内容要点：

　　1.电视：信息丰富，开阔视野，休闲娱乐，辅导学习；

　　2.自行车：价格便宜，方便出行，有利环保，有益健康；

　　3.学生自己发明的东西，其用途或发明理由的说明。