日期在某一個(gè)時(shí)間段固定不變：fixed in time
　　在一系列的時(shí)間段中轉(zhuǎn)變：change over time
　　持續(xù)變化的data 在不同情況下：
　　增加：increase, rise, grow, go up, appreciate..
　　減少：decrease, fall, drop, go down, decline,.
　　波動(dòng)：fluctuate/ rebound/ undulate/ wave..
　　穩(wěn)定：remain stable/ stabilize/ level off..
　　比較常用的兩種表達(dá)法
　　動(dòng)詞 + 副詞形式(Verb + Adverb form)
　　形容詞 + 名詞形式(Adjective + Noun form)
　　1、Verb + Adverb form
　　The number of XXX +increase/ jump/ rise/ decrease/ drop/ fall/ fluctuate ... +insignificantly/ significantly/ slightly/ suddenly/ rapidly/ dramatically/ sharply/ steeply/ steeply/ steadily/ gradually/ slowly ...+from (第一時(shí)間) to (第二時(shí)間) / between (第一時(shí)間) and (第二時(shí)間)
　　2、Adjective + Noun form
　　There was a (very) sudden/ rapid/ dramatic/ significant/ sharp/ steep/ steady/ gradual/ slow/ slight +increase/ jump/ rise/ decrease/ drop/ fall/ fluctuation (注意：上述很多詞不可用于修飾fluctuation) +in the number of XXX from (第一時(shí)間) to (第二時(shí)間) / between (第一時(shí)間) and (第二時(shí)間)
　　3、描述穩(wěn)定的日期：
　　The number of XXX remained steady/ stable from (第一時(shí)間) to (第二時(shí)間) / between (第一時(shí)間) and (第二時(shí)間)
　　The number of XXX stayed the same from (第一時(shí)間) to (第二時(shí)間) / between (第一時(shí)間) and (第二時(shí)間)
　　There was little change/ hardly any change/ no change in the number of XXX from (第一時(shí)間) to (第二時(shí)間) / between (第一時(shí)間) and (第二時(shí)間)
　　4、描述高點(diǎn)值以及低點(diǎn)值
　　高點(diǎn)值：
　　The monthly profit/ The figures/ The situation ...+peaked in (月份/年) <準(zhǔn)確時(shí)間點(diǎn)用at XXX> at XXX% / XXX (極點(diǎn)data) 或者reach a peak/ a high point at XXX% / XXX (極點(diǎn)data)
　　低點(diǎn)值：
　　XXX bottom out/ reach +rock/ the bottom/ a low point或者h(yuǎn)it a trough
　　此外， 在描述過(guò)程中還有很多的conjunctional words/ sentences，比較常用的固定搭配如下：
　　并列：
　　as well as (句首/中)， also, as well (句尾)， 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(shí)：
　　as a matter of fact, in fact, actually, as long as, so long as..
　　雷同/近似：
　　similarly, likewise (句首/尾)， at the same time, equally..
　　轉(zhuǎn)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 (of)， in spite of , despite of..
　　原因與結(jié)果：
　　(1)cause-suggestion (幾乎不常用)
　　since/ now that..., I hope that.../because of/ on account of/ owing to/ thanks to + (doing) sth./I hope that..
　　ause-effect (較常用)
　　XXX lead to/ bring about/ result in/ account for..
　　(一個(gè)句子)， therefore/ thus/ hence/ as a result/ consequently/ (and) so..
　　ffect-cause (較常用)
　　XXX be caused by/ result from/ be the result of/ be the effect of/ be the consequence of..
　　(一個(gè)句子)， because..
　　it is adj. that..
　　it is unimaginable that..
　　it is undeniable that..
　　it is interesting to discover that..