1some students ran back to the dormitory,magazines [held] under their arms .2the 29th Olympic Game1some students ran back to the dormitory,magazines [held] under their arms .2the 29th Olympic Game,[held]in Beijing in 2008 was a great success.为什么不用whicl held 3 in England ,tea [is served] with milk and sugar.第一题和第三题 比较 为什么第一题不用 are held?

问题描述:

1some students ran back to the dormitory,magazines [held] under their arms .2the 29th Olympic Game
1some students ran back to the dormitory,magazines [held] under their arms .
2the 29th Olympic Game,[held]in Beijing in 2008 was a great success.为什么不用whicl held
3 in England ,tea [is served] with milk and sugar.第一题和第三题 比较 为什么第一题不用 are held?

第二题其实也可以用which来修饰的,在这里,,“held in Beijing in 2008”作为修饰 “2the 29th Olympic Game”的定语,which引导的是定语从句,可要可不要。
第一和第三题这要分析句子成分。
第一题中,主句是“some students ran back to the dormitory”,里面已经有一个谓语动词“ran”了,所以后面的“magazines [held] under their arms”只能作为修辞补充的成分,在这里不宜出现谓语,所以用held表示一种修辞,而不用作为谓语动作,也就不能写成“was held”来充当谓语的成分。
而第三题与第一题不同之处在于他没有定语从句,在这里serve就是谓语,又因为是被动的关系,所以必须以被动形式is served。

1.some students ran back to the dormitory已经是一个完整的结构,主谓宾都有了,后面是逗号,说明后面的成分也是这个句子的一部分,在没有连词的情况下,一个句子不能有两个谓语,所以不能用are held.省略了are是因为后...