大学英语作文1500字：悲观与乐观beingoptimisticorpessimistic1．举例说明什么是乐观、什么是悲观?2．我们应该怎样?[写作导航]本文第一段宜采用下定义的方法给出乐观和悲观的含义；第二段采用对比的写法，列举两种人对待挑战的态度，来说明乐观和悲观；第三段进一步说明乐观和悲观会产生不同的结果，自然得出我们应乐观的结论。[范文]beingoptimisticmeansbeinghopefulaboutthefutureandthesuccessofsomethinginparticular.beingpessimistic,ontheotherhand,meansbeingsadaboutthefutureandalwaysthinkingthatsomethingbadisgoingtohappen.let＇stakethechallengesinoureverydaylifeasaneample.facedwithachallenge,apessimisticpersonmayfeelgloomy,distressed,andevenafraidofit.heconsidershimselfpowerless,andcomplainsaboutitalldaylong,refusingeventohaveatrybeforegivingitupintheend.anoptimisticperson,however,mayadoptanentirelydifferentapproach.hemaynotregardthechallengeassomethingbad,instead,hetakesitasanecellentopportunitytodisplayhisabilitiesandtalent.pressuresimplyaddstohisenthusiasmtorealizehisdream.obviously,beingoptimisticandbeingpessimisticaretwodifferentattitudestowardslife,whichalwaysmeanthedifferencebetweenfailureandsuccess.itisnaturalthatweencounterchallengesofonekindoranotherinourlife.ifwearepessimisticwheneverweareconfrontedwithchallengeswearedestinedtohaveonefailureafteranother.ifwearepessimistic,wearedestinedtofail,endingupaccomplishingnothing.butifweapproachthechallengesinanoptimisticway,wemaygofromvictorytovictory.therefore,beoptimistic,allthetime.