haifeng_0058
幼苗
共回答了21个问题采纳率:85.7% 举报
你句中用了in order to表目的,所以你这句话如果这样写会给人两种感觉,到底这些人去调查环境被污染的原因还是去调查环境是不是被污染了.所以你问that改成whether就是因为你这句话说的不明确.我给你改成以下两个句子,你看看自己选一个.
A group of scientists were planning to do a scientific research at the countryside in order to find out the pollution causes of the enviroment of the country.
A group of scientists were planning to do a scientific research at the countryside in order to find out whether the enviroment of the country had been polluted or not.
你的第二个问题polluted是动词过去式,加been表被动,建议你去买本张道真的语法书,很容易懂的.你的第三个问题很奇怪,应该是had found吧,were been根本没这么说的,你需要把语法书中最基本的先学会,动词过去式和过去分词可是最基本的啊,兄弟,加油!
1年前
1