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高二英语问题1.They have discussed it for days ,but when and where

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高二英语问题
1.They have discussed it for days ,but when and where to hold the New Year's party still ( ) yet .
A have not been decided B has not been decided
C have not decided D has not decided
为什么选B不选A
2.( ) delicious ,the French style moon-cakes are selling well this year .
A taste B to taste C tasted D tasting
选D的原因是因为动名词表示原因吗?
1.They have discussed it for days ,but when and where to hold the New Year's party still ( ) yet .
A have not been decided B has not been decided
C have not decided D has not decided
为什么选B不选A
答:主语为when and where to do sth.何时何地做某事,是一件事的两个方面(不可分离的),实际上是一件事,所以主语看作单数.
2.( ) delicious ,the French style moon-cakes are selling well this year .
A taste B to taste C tasted D tasting
选D的原因是因为动名词表示原因吗?
答:动名词不能作状语.V-ing 也可能是现在分词.分词可以作状语,其逻辑主语就是主句的主语.选过去分词还是现在分词,要看主句主语和它之关的关系,如果是主动的,就用现在分词,被动就用过去分词,如:
Seeing from the top of the hill,we found the city beautiful.we 与 see是主动关系.
Seen from the top of the hill,the city is beautiful.the city 与see 是被动关系.
我们说:the French style moon-cakes taste dilicious.是主动关系.
不说:the French style moon-cakes is tasted dilicious.
taste 在这里是连系动词,没有被动语态的.所以不能用过去分词.