Part One Argumentative Composition
1.A is/becomes an indispensable part of B
Advertising has become an indispensable of our daily lives and it has been exerting profound influence on the way we live, work, play and learn.
2.Sth is the root cause of...
The population explosion is the root cause of water scarcity.
(An explosion is a large rapid increase in the number or amount of something./If there is a scarcity of something, there is not enough of it for the people who need it or want it.)
3.Sth consolidates its status as the...
English has been consolidating its status as the dominant language in the world.
(If you consolidate something that you have, for example power or success, you strengthen it so that it becomes more effective or secure.)
4.It is conceivable/apparent/obvious that...
It is conceivable that knowledge plays an vital role in our life.
5.be compelled/obliged/forced to do sth
I am compelled to give up doing sports since the examination is around the corner.
6.pose a great threat to
Pollution poses a great threat to our existence.
7.leave much to be desired
The condition of our traffic leaves much to be desired.
Part Two Graph Composition
A.开头段常用句型
1.The chart(curve/graph/diagram/table/picture) provides some interesting data regarding...
2.This is a curve graph which describes the trend of
3.As is demonstrated/exhibited/shown in the diagram/graph/chart....
4.The chart shows(suggests/decribes,reveals,compares,uncovers,summaries,illustrates)...
5.This table shows the changing proportion of A and B form ...to ....
6.This graph, presented in a pie chart, shows the general trend in...
B.表示“增加（上升）／ 减少（下降）／不变／波动的常用句型
1....year witnessed/saw a sharp rise in...
2.The number sharply went up to...
3.There is an upward trend in the number of...
4.A considerable increase/decrease occurred from...to...
7.From this year on, there was a gradual decline/reduction in the...reaching a figure of...
8....decreased year by year while ....increased steadily.
9.From...to..., the rate of decrease slows down.
10.As can be seen from the graph, the two curves show the fluctuation of...
(A curve is a smooth, gradually bending line, for example part of the edgeof a circle./If something fluctuates, it changes a lot in an irregular way.)
11.The numbers fluctuate during...
12.The trend reversed from...
C.最高点和最低点
1.The figures of ... peaked at...in...(month/year).
2.The situation of ... reached a peak of (a high point at)...%.
3.The figures/situation bottomed out in...
4.The figures reached the bottom/a low point/hit a trough.
D.倍数和比率/比较
1.The graphs show a threefold increase in the number of...
2.The percentage remained steady at...
3.The percentage of... is slightly larger/smaller than that of...
4.A occupies only 5%, which stands in marked contrast to the 95% of B.