Today,Iwaswalkinghomewithmyclassmates,suddenly,Isawanoldladyfalldownonthestreet.Thereareseveralpeoplewalkingbybutpretendingtheydonotseethefallinglady.However,thefirstthingcomeintomymindistohelpher,soIrantoherandhelphertostandup.Shethanksmeandpraisesmeasagreatstudent.Ifeltfullofjoyfulandproudinmyheart.Iknowthesedays,peoplestarttolosetrustoneachother,theysuspectpeoplewilltakeadvantageofthembyactingfallingdownonthestreet.ButIknowthatourChinesetraditionistohelpothers,alwaysconsiderotherpeople'sbenefit.Ibelievethatonlybyfullytrustingothers,oursocietycanrebuildthegoodmoralstand.Schoolhastaughtmetobeastudentwhoisnotonlystudyingknowledgebutalsowillcontributetosociety,sowhenIseepeopleneedhelp,Iwouldgiveahandwithoutthinkinganyotherresult.IfelthappyandconfidentthatIchoosetohelptheoldladywhenothersafraidto.
190个单词,差不多吧.