Is this sentence grammatically correct? 中国的建设开始的时候，人人是不以为过环境污染的。 I'm trying to write:


  While construction began in China, people hadn't thought of the pollution.


Is this an accurate use of the grammar: shi4 ... de
When construction began in China, people didn't think about pollution.

当工业在中国兴起时，人们并没有想到污染的问题。