英文长句,求分析语法结构。
发布网友
发布时间：2022-04-23 22:54
共2个回答
热心网友
时间：2023-07-19 05:54
显而易见，have also been designed on demand for specific applications是跟在fluorine atoms后面的
热心网友
时间：2023-07-19 05:55
错误结构句子。
分析一下：
简化：
they are alkenes
that定语从句修饰alkenes...that主语，谓语contain
have also been没有主语，可以考虑改为and have，作为定语从句并列谓语，因为整个句子是以alkenes为中心的。
They are commercially available and conventional alkenes that contain one or several fluorine atoms born by ethylenic carbon atoms and have also been designed on demand for specific applications.
