41. there is an upward trend in the number of...

......数字呈上升趋势。

42. a considerable increase/decrease occurred from...to...

......到......发生急剧上升。

43. from...to...the rate of decrease slow down.

从......到......，下降速率减慢。

44. from this year on，there was a gradual declinel reduction in the...,reaching a figure of...

从这年起，......逐渐下降至......

45. be similar to...

与......相似

46. be the same as...

与......相同

47. there are a lot similarities/differences between...and...

......与......之间有许多相似（不同）之处

48. a has something in common with b

a于b有共同之处。

49. the difference between a and b lies in...

a与b之间的差别在于...

50. ...(year)witnessed/saw a sharp rise in...

......年......急剧上升。