The English book for kids is the best of its kind ______.

正确答案是:B

The English book for kids is the best of its kind ever made.
【译文】:这本针对儿童的英语书是目前编得最好的一种书.
【解析】:
主语是this kind of sth., these kinds of sth.谓语动词的单复数由kind决定,如:
This kind of apple is sweet.这种苹果很甜.
This kind of apples is sweet.这种苹果很甜.
These kinds of apples are sweet.这种苹果很甜.
但是sth. of this kind作主语谓语动词用复数形式.
如:Apples of this kind are sweet.

本句一个定语从句,先行词是the best of its kind (最好的这种),恰好就是例外的情况,所以当它作主语时,谓语动词用复数形式.答案首先排除A D, 如果有答案是:that have ever been made 最好不过,但没有,而C答案中缺少主语,定语从句中是不可以省略主语的,所以排除. 现在有且只能选B.过去分词作定语.

has ever been made是现在完成时的被动语态，强调过去的动作对现在的影响，也不清楚这个动作是否已经完成

ever made 在这里是that was ever made的省略，是过去时的被动，表示过去的动作

A

正确答案确实是B,ever made

用A就是定语从句修饰 the best, 意思上解释不过去,还是用ever made好,它只修饰its kind,复数.ever made 只修饰its kind.

其他选项不可以用,因为这里只能用一个短语,不需要谓语结构了,其他都是谓语结构.或者现在分词也不能用, 因为这里是完成了的动作.

"The English book for kids" 主语 is (the best of its kind宾语)(ever m