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 decline 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。