定语从句为什么不能变分词作定语？

Question

The airport which will be built next year (= to be built next year, 但不能用分词短语being built 或 built next year。)？为什么

Answer 1

答：定语从句不能变为分词作定语的时态是一般将来时。即：当定语从句的谓语动词是一般将来时的时候，定语从句一般只能简化为不定式（短语），而不能简化为分词短语做定语。例如：

The bridge which will be made next month will connect our town with the outside world.

简化：The bridge to be made next month will connect our town with the outside world.

1.定语从句简化为现在分词（短语）做定语。一般情况下，定语从句的谓语动词是主句的主语发出的，是主动语态，用现在分词。例如：

The boy who is reading under the big tree is my brother.
简化：The boy reading under the big tree is my brother.

2.定语从句简化为过去分词短语做定语。一般情况下，定语从句的谓语动词是主句的主语发出的，是被动语态，用过去分词。例如：

English is a language which is spoken all over the world.

简化：English is a language spoken all over the world.

Answer 2

回答如下：
定语从句作定语时，可用你所需要的任何时态或语态，表达各个时间的动作或状态作，并且都是后置定语; 而分词则分为现在分词和过去分词，它们用法不完全相同：现在分词有主动语态和被动语态，有一般式和完成时，可以表示正在进行或完成或两个动作同时发生的动作或状态，可以作前置和后置定语、状语、表语、宾补，但它作定语时，不能用完成式; 而过去分词只有一般式，通常表示被动，表示完成的动作或两个动作同时发生，可以作前置或后置定语、状语、宾补、表语。
现在分词或过去分词短语作定语时，不能表示未来的动作或状态, 但可以用定语从句或不定式表示未来的动作或状态，你的句子就是这种情况。例如：
This is a burning stick = This is a stick which is burning.
Take away the broken glass = Take away the glass which is / has been broken.
The cinema which will be built / to be built next year can hold 2000 people.
The man (who is ) standing there is my uncle.
The house facing south (= which faces south) is a clinic.
(误) The bridge having been built now is 150 metres long.
( 正) The bridge ( which has been ) built now is 150 metres long.本回答被网友采纳

Answer 3

知道定语从句能变成短语就行了，不一定都能变成分词，比如这句中是将来时 ，就要用不定式表将来。