--,the world's transport and communication system would fall apart.A all the electricity turning off B All the electricity turned off C If the electricity being turned off D With the electricity turning off

--,the world's transport and communication system would fall apart.A all the electricity turning off B All the electricity turned off C If the electricity being turned off D With the electricity turning off
--,the world's transport and communication system would fall apart.
A all the electricity turning off B All the electricity turned off
C If the electricity being turned off D With the electricity turning off

--,the world's transport and communication system would fall apart.A all the electricity turning off B All the electricity turned off C If the electricity being turned off D With the electricity turning off
选B
独立主格结构,电electricity与turn off是动宾关系,即,电力是被关,被切断.
He was listening attentively in class,his eyes fixed on the blackboard.
他上课专心听讲,眼睛紧盯着黑板.
此句为名词(代词)+过去分词形式
句中出现两个主语,the electricity、transport and communication system ,两个主语连接时需要有连词,如果居中缺少连词,就要考虑到使用独立主格结构,主谓关系的用现在分词形式表示主动,动宾关系的用过去分词表示被动.句子大意：要是所有的电被关掉,世界上的交通通讯系统将会崩溃.原句应该是If all the electricity was turned off,the world's transport and communication system would fall apart.该句同时运用了虚拟语气,表示对现在的假设.如果用独立主格,连词需要省略.
名词(代词)+现在分词
There being no bus,we had to walk home.
由于没有公共汽车,我们只好走回家

B

选B
这是虚拟语气，与现在事实相反，所以主句用would+动词原形（fall apart）
从句由一个名词短语代替，all the electricity turned off =if all the electricity was turned off.
此处不能选C,因为如果用if,后面就必须是一个句子，而不能是一个名词短语。
意思：如果把所有的电源都关掉，世界...

全部展开

选B
这是虚拟语气，与现在事实相反，所以主句用would+动词原形（fall apart）
从句由一个名词短语代替，all the electricity turned off =if all the electricity was turned off.
此处不能选C,因为如果用if,后面就必须是一个句子，而不能是一个名词短语。
意思：如果把所有的电源都关掉，世界的交通和通讯系统将分崩离析。

收起

D