data在某一個時間段固定不變：fixed in time
在一系列的時間段中轉變：changes over time
持續(xù)變化的data在不同情況下:
增加：increase / raise / rise / go up ...
減少：decrease / grow down / drop / fall ...
波動：fluctuate / rebound / undulate / wave ...
穩(wěn)定：remain stable / stabilize / level off ...
最常用的兩種表達法：
動詞 + 副詞形式
形容詞 + 名詞形式
1. Verb+Adverb form
The number of XXX
+increase/jump/rise/decrease/drop/fall/fluctuate...
+insignificantly/significantly/slightly/suddenly/rapidly/dramatically/sharply/steeply/steadily/gradually/slowly...
+from to / between and
2. Adjective+Noun form
There was a sudden/rapid/dramatic/significant/sharp/steep/steady/gradual/slow/slight
+increase/jump/rise/decrease/drop/fall/fluctuation
+in the number of XXX from to / between and
描述穩(wěn)定的data：
The number of XXX remained steady/stable from to / between and
The number of XXX stayed the same from to / between and
There was little change / hardly any change / no change in the number of XXX from from to / between and
描述不同狀態(tài)的data
Noun form:
steady drop / sharp rise peak / dramatic fall / sharp drop
Verbal form:
bottom out / reach the bottom / increase gradually / reach a plateau / remain steady
描述the highest point以及the lowest point
高點極值：
The monthly profit / The figures / The situation ...
+peaked in <準確時間點用at XXX> at XXX% / XXX
或者reached a peak / a high point at XXX% / XXX
低點極值：
XXX bottomed out / reached
+rock / the bottom / a low point
或者hit a trough
此外，在描述過程中還有很多的conjunctional words/sentences，最常用的固定搭配如下：
并列： as well as, also, as well, either, neither, too, moreover, furthermore, in addition, additionally, besides, what's more, apart from ...
舉例： for example, for instance, to illustrate, as an illustration, in particular, particularly, especially
事實： as a matter of fact, in fact, actually, as long as, so long as ...
雷同/近似：similarly, likewise, at the same time, equally ...
轉折： however, whereas, nevertheless, nonetheless, though, although, even though, while, yet, on the contrary, contrarily, in contrast, conversely, on the other hand, unlikely, in stead , in spite of, despite of ...
原因與結果
1. cause-suggestion
since / now that ...; I hope that...
because of/on account of/owing to/thanks to + sth, I hope that...
2. cause-effect
XXX lead to / bring about / result in/ account for ...
, therefore / thus / hence / as a result / consequently / so ...
3. effect-cause
XXX be caused by / result from / be the result of / be the effect of / be the consequence of ...
, because ...
it is adj. that ...
it is unimaginable that ...
it is undeniable that ...
it is interesting to discover that ...