也是白勇语法全解中的

...as...as;if not more so,...

sample:The use of chemical pesticides in this country is as extensive as it was ten years ago,if not more so.

i want to know the meaning of "if not more so..."in the sample sentence,and why a ";"put in the middle of the "...as...as;if not more so,...",and a ","in the sample sentence.

what is the emphasized section？？

thaks

if not more so，如果不是更。。。的话

强调部分是as extensive as ；

至于标点符号问题，倾向于“，”，不过不确定啊，同问。