a series of books后面为什么接is a number of books 后面为什么接are,

a series of books后面为什么接is a number of books 后面为什么接are, a series of seven books说法正确吗?a series of 表示一系列,后面还能加数量词seven吗? a series of books 后面加is 还是 are?a set of 呢? a series of books翻译成中文 a series of ,后面加什么词 a series of后是不是可以跟可数复数名词,也可以跟不可数名词?a series of development a series of books a series of 改错：A series of books have been donated to the village school a series of 和a pair of 后面谓语动词用单数还是复数? 是a series of factors还是a series of reasons 主语为a series of+复数名词 ,谓语应该用什么 主语为series of +复数名词 谓语应为什么 THE SOCIAL ANIMAL SERIES OF BOOKS IN PSYCHOLOGY怎么样 Harry Potter is a series of seven fantasy novels written by British author J.K.Rowling.The books it () the best selling series of children's books in history Ahas become Bbecame Cbecomes 为什么选Ait () the best selling series of children's books in historyAhas become Bbecame Cbecomes 为什么选A a series of 名词复数 那后面加谓语用单数还是复数?为什么啊A series of football games (is)hold ....VS.A series of discussion groups have been.... a series of a serious of 区别 关于a series of作主语,谓语用单数为什么这里用have been,也可以填a series of There have been （a series of）books about harry potter who has magic powers..书上又说a series of作主语,谓语用单数.并举例如下：There has 英语中有很多的固定搭配 如 a series of 那在分析成分的时候 是不是说 a series 是 宾语 of +名词 是定语如 he has a series of books.还是说 book是宾语.a series of是介词短语?