一句英语的语法分析,语句意思我知道,要语法分析,越详细越好.Thecourtrejectedalowercourt’sdecisiontobansaleofgeneticallyengineeredalfalfaseedsuntilthegovernmentcompletedastudyoftheireffectsontheenviron

Question

一句英语的语法分析,语句意思我知道,要语法分析,越详细越好.
The court rejected a lower court’s decision to ban sale of genetically engineered alfalfa seeds until the government completed a study of their effects on the environment.

Answer 1

该句看起来虽然很长,但只是一般的“until引导的时间状语从句”,主、从句的时态都是一般过去时.
详细的语法分析如下：
主句：The court rejected a lower court’s decision to ban sale of genetically engineered alfalfa seeds ...
主句的主语是The court ；
主句的谓语动词（rejected ）的时态是一般过去时；
主句的宾语是a lower court’s decision,
宾语补足语是to ban sale of genetically engineered alfalfa seeds .
从句：...until the government completed a study of their effects on the environment.
从句的主语是the government ；
从句的谓语动词（completed ）的时态也是一般过去时；
从句的宾语是a study of their effects on the environment,其中of 短语（their effects on the environment）作a study 的后置定语.