求一道英语填空题答案麻烦简单说明下原因,The country has already sent up three unmanned spacecraft,the most recent______ at the end of last March.A.has been launched B.having been launched C.being launched D.to be launched

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求一道英语填空题答案麻烦简单说明下原因,The country has already sent up three unmanned spacecraft,the most recent______ at the end of last March.A.has been launched B.having been launched C.being launched D.to be launched

求一道英语填空题答案麻烦简单说明下原因,The country has already sent up three unmanned spacecraft,the most recent______ at the end of last March.A.has been launched B.having been launched C.being launched D.to be launched
求一道英语填空题答案
麻烦简单说明下原因,
The country has already sent up three unmanned spacecraft,the most recent______ at the end of last March.
A.has been launched B.having been launched
C.being launched D.to be launched

求一道英语填空题答案麻烦简单说明下原因,The country has already sent up three unmanned spacecraft,the most recent______ at the end of last March.A.has been launched B.having been launched C.being launched D.to be launched
C 后半句是对前半句的解释说明.作状语.

A

A

C

c.后半句做状语,表示过去发生的事情,被动。

选C.being launched 状语 我英语专八 老师

C

C,两个中间用逗号隔开,但是又没有连接词,所以后面的只能是一个短语,而不能是一个句子。排除A.

貌似是没有答案
如果中间的逗号改为句号的话 这就是两个句子
这时候就可以填had been launched
但现在是逗号 表明这是一个句子 所以应该填的是非谓语动词
排除A 在这里明显看出是作后置定语 而且是被动
将来的被动是to be done 或 to do
现在的被动是being done
过去的被动是done
所以这里...

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貌似是没有答案
如果中间的逗号改为句号的话 这就是两个句子
这时候就可以填had been launched
但现在是逗号 表明这是一个句子 所以应该填的是非谓语动词
排除A 在这里明显看出是作后置定语 而且是被动
将来的被动是to be done 或 to do
现在的被动是being done
过去的被动是done
所以这里应该填launched 没有答案
- - 呼~打得好累

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