英语并列句 and

并列关系是这样的---材料的发展 和 研究方法的发展

判断方法是： materials and research methods 中 materials是负数，肯定不可能是与research并列，如果并列应该是单数，并且通过意思也是可以判断的

并列句的定义
由并列连词连接的两个或两个以上独立分句的句子就是并列句。例如：
I turned on the TV and we sat down and watched it. 我开了电视机后，我们就坐下来看电视节目。
You may go with us, or you may stay at home. 你既可以跟我们一起去也可以呆在家里。
It was getting late; we had to go back. 不早了，我们只得回去。

并列连词and(表示并列附加关系), not only…but also (连接两个并列分句时，前一个句子倒装，但侧重点在后一个并列句上)。例如：
Promote physical culture and build up the people’s health.发展体育运动，增强人们体质。
This article is well-written and you’d better read it. 这篇文章写得很好，你最好看看。
Not only is he himself interested in computer but also his son is beginning to show an interest in it.不仅他对电脑感兴趣，而且他的儿子也开始对电脑感兴趣。
Not only everything he had had taken away from him, but also his German citizenship was taken away from him. 不仅他所有的一切被剥夺，而且就连他的德国国籍也被剥夺了。

表示并列和递进关系时用and