a few years ago the belief became general that orange juice

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/11/16 09:04:49

a few years ago the belief became general that orange juice and milk should never be drunk at the same meal
1.should never be drunk是一般过去的被动语态么?由情态动词should来体现be的时态?
2.be drunk算是主要动词?
be drunk是should never be drunk中的主要动词么~

a few years ago （时间状语）the belief （主语）became（这里became相当于系动词BE的形式） general （表语）
that部分做的是表语补足语
that orange juice and milk （补语中的主语）should never be drunk(谓语） at the same meal （状语）
这句话的意思是：几年前,一个概念/信念变的非常普遍,那就是橘子汁和牛奶不能在同一餐饭中饮用.
因为主语中用的是过去式,所以从句也必须用过去时.后面should部分是情态动词的被动语态,不是楼主所说的那样.
drunk只能算是从句中的主要动词,整句话来看的话,主要动词是became~

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