This graph/pie chart/table/bar chart reflects the (rate/percentage/proportion/number …) of (对象) in(place/country)from …to…
According to the figure ， it is not surpring findings that there was/were 总体趋势的描述(the overall trend tended to indicate…/the general trend is…/其他)
In conclude ， the overall trend tended to illustrate ……during this **-year period
According to the data ， the years from …to…saw/winess a rise/climb/drop in the number/rate/percentage/proportion of 对象 from数据to数据，which was followed by a rapid decrease/reduce/increase over the ** years.
The number/rate…droped/went up again from…in ** year to…in ** year and then went up/clined gradually until ** year ，when there was a leveling off/leveling out at 数据 for 一段时间。
Also it can be noticed that in ** year ，the number/percentage … reached the buttom . However/on the contrary，**year saw the peak during this period.
……时间点 ，when the number/percentage reached(amounted to)to a peak of… / a high point at …
……时间点，when the number/percentage bottomed out (at…)
The proportion/number of 对象 in the xx and xx are similar and follow the same trend.In ** the figures were xx% and xx% respectively，rising to xx% and xx% respectively in **，after dipping to xx% and xx% respectively in **.(总体的趋势介绍)Thereafter，分开介绍即可
…is projected to…… as to
…is expected to…… as for
…is forcasted to …… …is estimated to…
1.a is nearly /more than…times as much/many/large as b.
3. be the same as…
(1). cause-effect (较常用) ：XXX lead to / bring about / result in/ account for … (一个句子/shared the same tendency)， therefore / thus / hence / as a result / consequently / (and) so …
(2). effect-cause (较常用)
XXX be caused by / result from / be the result of / be the effect of / be the consequence of … (一个句子/shared the same tendency)， because …
it is adj. that …
it is unimaginable that …
it is undeniable that …
it is interesting to discover that …
It is clear that the most (adj.) xx is A， which accounts for m% of all x . B is the next largest(adj.)xx ，n% lower than A of all x and followed closely by C . The above three items of xx take uo about o% of the x%
By contrast D E andF make uo the smallest percentage of total x ， which are p% q% and r% ，respectively.
The regions can be divided into two groups-one where … and the other where the reverse is the case.
Form， comprise， make up， occupy
Constitute， cover， represent， account for
Be shared by
In 1950， the urban population represented less than 13% of the total. It is now about 40% and is expected to reach 60% by 2030. (摘自BBC)
A quarter of…
A majority of…
A has something in common with b
A shares some similarity with b
The difference between a and b lies in…
Double， triple， quadruple (v， n， adj)
The value of the house has increased fourfold (=it is now worth four times as much as before).
…be twice as adj. as …..
…more than xx times as adj. as …..