一、原因现象型

Withthedevelopmentofscienceandhumancivilization,manyformerlyunimaginablethingscomeintoreality.Someofthemhavepositiveeffectsonourlife，butsomearedistasteful.Thephenomenonof__(主题现象)isanexampleoftheformer/latterone.

Therearemanyfactorsthatmayaccountforit,andthefollowingarethemostconspicuousaspects.Tostartwith，____(原因1).Furthermore，__________(原因2).Eventually，____(原因3).Goodas____(主题现象)is，ithas，unfortunately，itsdisadvantages.Theapparentexampleisthat___(缺点例子1).Inaddition，____(缺点例子2).

Onthewhole,thephenomenonisoneoftheresultsoftheprogressofthemodernsociety.Thereisstillalongwayforustoimprove/eliminate______((主题现象)andmakeourlifemorecomfortable.

二、分析利弊型

Nowadaysmanypeopleprefer_____(主题)becauseitplaysasignificantroleinourdailylife.

Generally,itsadvantagescanbeseenasfollows.Ontheonehand,

____(主题的优点2).

___(主题的优点1).Ontheotherhand，___

Buteverythingcanbepidedintotwo.Thenegativeaspectsarealsoapparent.Oneoftheimportantdisadvantagesisthat__(主题的缺点1).Tomakematesworse，___________(主题的缺点2).

Throughtheabove***ysis,Ibelievethatthepositiveaspectsfaroutweighitsnegativeaspects.Whatevereffectsithas，onethingiscertain，______(主题)itselfisneithergoodnorbad.Itistheusestowhichitisputthatdetermineitsvaluetooursociety.

三、解决问题型

Withthedevelopmentofthesociety，withtheadventof__(相关事物或现象)，wehavetofaceaproblemthat__(主题问题.

Whatarethereasonsforit?Inthefollowingparagraphs,I'llventuretoexplorethereasons.Tostartwith,_____(阐述原因1).Moreover，

______(阐述原因2).Inaddition，___(阐述原因3).

Inviewoftheseriousnessoftheproblem,effectivemeasuresshouldbetaken.Foronething,itishightimethatpeoplealloverChinarealizedtheimportanceof____(解决主题问题).Foranother，thegovernmentshouldissuestrictlawsandregulationsinordertoputthesituationundercontrol.

四、图表型

Itisobviousinthegraphic/tablethattherate/number/amountofYhasundergonedramaticchanges.Ithasgoneup/grown/fallen/droppedconsiderablyinrecentyears(asXvaries).AtthepointofX1，Yreachesitspeakvalueof.(多少).

Whatisthereasonforthischange?Mainlythereare..(多少)reason***ehindthesituationreflectedinthegraphic/table.Firstofall(第一个原因).Moreimportantly，(第二个原因).Mostimportantofal，.(第三个原因).

Fromtheabovediscussions,wehaveenoughreasontopredictwhatwillhappeninthenearfuture.Thetrenddescribedinthegraphic/tablewillcontinueforquitealongtime(ifnecessarymeasuresarenottaken括号里的使用于那些不太好的变化趋势).