这段英文有问题没有?如果有请指出错误的地方.

问题描述:

这段英文有问题没有?如果有请指出错误的地方.
thorough investigation is made on the experimental teaching conditions of these schools through investigation,analyzing the datum

be made on 没有这个用法也.
而且最后through 后面要么全接动名词 through investigation and analysis of the datum,要么全接现在分词through investigating and anlyzing the datum .
如果lz是想analyzing the datum 分句的话,那么逻辑主语是thorough investigation,这也是不可以的.
最好吧汉语原句给出来,这个句子很混乱.