Once ----,this power station will supply all the neighboring

问题描述:

Once ____,this power station will supply all the neighboring towns and villages with electricity
A.it being completed B,it completed C.completed D.it completing
为什么选C而不选B呢?
1个回答 分类:英语 2014-12-14

问题解答:

我来补答
他们都解答的不够准确.不用it是因为没有必要.你见过having做前置状语的句子吧?比如talking with Anne,he walked into the officie.(他一边和Annie说话,一边走进办公室) 为什么前面不用He呢?就是因为前后的逻辑主语都是一致,所以没有必要写he.原句中it也一样是省略的.-ed做前置状语表被动,例句:Chased by bees,he jumped into the river.被蜜蜂追着,他一头跳进河里.
有不明白的追问哦.
 
 
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