The experiment can not be carried out because of ___.

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The experiment can not be carried out because of ___.
A:the equipment is destroyed
b:the equipment to be destroyed
c:the equipment being destroyed
d:the equipment has been destroyed.
是不是选D啊?destroy的过去分词是直接加ed?不是去掉Y加ied吗?：）

首先应该选择C,因为because of 是动词短语,后跟名词或名词性短语,而D选项是一个完整的句子,这一点要和because相区别,because后必须跟句子,如果把because of换为because就可以选择D了.
其次,这个设备应该是被人破坏了,含有被动的意思,用be destroyed来表示被动,修饰equipment,又因为of是介词,如果出现动词的话要在动词后加ing,所以应该是being destoryed
此外,destory的过去分词就是直接在词尾加ed,不要和名词单复数的变化相混淆.

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