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1、词汇上升上升:goup,increase,grow,rise,climb,ascend,expand,showanupwardtrend,gain,pickup,takeoff,mount急剧上升：jump,soar,surge,escalate，rocket,swell,boom,leap,shootup,skyrocket缓慢上升：easeup,edgeup,creepup,accrueThesmokingrateinyounggirlswasontherise.下降下降:godown,decline,decr
2、ease,drop,fall(off),slide,slip,descend,dip,reduce,shrink,dwindle,diminish,showadownwardtrend,abate,slowdown急剧下降:crash,collapse,plummet,plunge,slump缓慢下降：subside,ebb,easedown,edgedown,creepdownasharpdecreaseinthe…幅度副词幅度小幅度大rapidly,sharply,markedly,tremendously,i
3、mmensely,significantly,substantially,noticeably,considerably,steeply,dramatically,drastically,overwhelminglygently,steadily,stably,subtly,slowly,moderately,slightly,modestly,marginally,minimallygradually,regularly,continuously,progressively,smoothlycomparative
4、ly,relatively相应地correspondingly,proportionately均匀地evenly,equally平滑地比较地突然地suddenly,abruptly不均匀地unevenly,unequally修饰名词时，幅度副词去ly变成形容词。riserapidlyTherewasarapidrise….波动fluctuate(名词:fluctuation),wave,waver,vibrate,vary,shift,swing,flutter,alternate,vacillate,undula
5、teriseandfall,goupanddown,rangebetween…and…形容词：fluid,variable,volatileThenumberofpeopleusingthestationfluctuates.反转：reverse复苏：recover(from),bounceback稳定remain/stay/maintain/keepstable(steady/constant/thesame/balanced/unvarying)stabilize/stand/leveloff(out)/eve
6、nout/reachaplateau/flattenoutat…experienceastabletrend,demonstratenovariationthereishardlyany/no/littlechangeresume/continue+趋势最高点reach/hit/attain/increasetothepeak(top/thehighestpoint/summit/climax/zenith/pinnacle/apex/vertex/culmination)at…peakat…（此处peak作动词）
7、最低点hit/reach/attain/decreasetothebottom(alowpoint/floor/base/valley/trough/nadir)at…bottomoutat…（动词短语）平均mean/averagetakeanaverageaverageoutat…strikeabalance具体上升/下降多少静值：at,of,withThenumberofpopulationpeakedat2million.动值：toThenumberofpopulationincreasedto2millio
8、n.差值：byThenumberofpopulationincreasedby2million.A5%dropdecrease3.7%risefurtherto8%fallasmuchas25%hitthebottomat21percentgrowbyaround25%to14000dollarsamonthrosesteeplyfromtheyear200
