今天思润小编给同学们带来的是雅思写作考试之曲线图常用表达： 下降

平稳下降：

makeasteadydecrease平稳下降

e.g.Itisclearthattherateofsmokingforbothmenandwomenmadeasteadydecreasefrom1985.

dropgradually逐渐下降

Thisnumberdroppedgraduallyto500by1984andcontinuedtodecreaseuntil2010.

asteadydrop平稳下降

aslightfall微微下降

agradualdecline逐渐下降

asmalldecrease微微下降

agradualdrop

tailingoff下降

Encouragingly,thenumberofminorsbeingsenttocustodyinBritainseemstobetailingoff:itfellbynearlyafifthbetween1997and2007.令人欣慰的是，英国被羁押的未成年人数目似乎正在逐渐降低。1997至2007年期间，已经降低了近20%。

Variationtendencyofannualrunoffandamountofsandlostwasidenticalbasically,andthequantityofwaterandsandatHuaxiangaugingstationwastailing-offcontinuouslyfromthe1960to2005;年径流量和年输沙量的变化趋势基本一致，而且自60年代至2005年华县站的水沙量持续呈递减趋势；

Asaresultthere'saveryrobustmarketofproductsthataremarketed,mayhaveplateauedorbetailingoffinsalesbutthatarestillgeneratingsignificantamountsofrevenue.

这样，那些已经上市，销量已不增长甚至下降，但利润仍很可观的药物也形成一个稳定的交易市场。

fallingoff下降

Duringthefirstweekwireskeptfallingofffromherbodyandweregone.

金属丝生长第一周时曾经出现过脱落迹象，甚至完全消失。

Thefiguresshowthatdespitethenumbersofunderagepregnanciesfallingoffafter2002,theyarenowontheriseagain.

数据显示，虽然在2002年未成年少女怀孕数量有所下降，但是现在又开始增加。

持续下降：

begintodeclineandcontinueonthisdownwardturnuntil...开始下降，并持续走低，直到XXX年

Butafter1994,therateofsmokinginfemalesbegantodeclineandcontinuedonthisdownwardturnuntil2010.

急剧下降：

fallsharply急剧下降

Thenumberofcasesofthediseasethenreachedapeakonthe12th,fluctuatingslightlyuntil15th,andthenfellsharplyoverthefollowingtwodays.

adramaticfall

asharpdrop

arapidplunge

asteepdecline

上升：

arapidleap

asuddenrise

amarkedincrease

ahugegrowth

adramaticrise

保持平稳：

nochange

aflattrend

thenumberremainedunchanged

平稳，下降，上升的混合表达

remainedsteady,followedbyaslightdecreasebeforethenumberrosedramaticallybetween...and....先保持平稳，之后有缓慢下降，接着又在....期间急剧上升

DuringthefirstfewdaysofDecember,thenumberofcasesofthediseaseremainedsteady,followedbyaslightdecreasebeforethenumberrosedramaticallybetweenthe8thandthe11thofDecember.

到达最高点

reachthepeak达到最高点

Thenumberofcasesofthediseasethenreachedapeakonthe12th,fluctuatingslightlyuntil15th,andthenfellsharplyoverthefollowingtwodays.

到达最低点

reachthelowestpoint达到最低点

Therewasaslightincreaseuptothe19thwhenthenumberreportedforthediseasedroppedsteadilyandfinallyreachedtheirlowestpointonthe31stofDecember.

两个主体整体趋势比较

remainlowerthanthatofXXXduringtheentireperiod在这段时间内整体比XXX更低

Butthesmokingrateofwomenremainedlowerthanthatofmenduringtheentireperiod.

一个主体整体趋势比较

（两句话说最高和最低的地方）：

Overall,thenumberofpneumoniapatientswashighbetweenthe7thand15thofDecember.Itisclearthatbythemiddleofthemonth,therewereonlyafewcasesofpneumoniarecorded.

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