如何判断a series of 后面跟的一系列是“同一类”还是“不同种类”

来源：百度知道编辑：UC知道时间：2024/06/09 12:30:18

There are a series of strange objects in his suitcase
他的手提箱里有一些奇怪的东西
象这题我就不知道为什么是“不同类”的?而用are
再如
A series of debates between the lectures____for the next weekend
A.were scheduled B was scheduled C have scheduled
D are scheduled

求各位支个招

Series 既是单数形式又是复数形式。当它具有“一套”的单数意思时，它使用单数动词，即使当series 紧接着 of 和一个复数名词时也是如此：
A series of lectures is scheduled.
一套演讲已安排好了。

当它有“一套或多套”的复数意思时，它使用复数动词：
Two series of lectures are scheduled:
两套演讲已安排好了：

“a series of levels”是什么意思？ a series of 后跟单数还是复数 the third of a three part series 他将有一系列会议要参加(a series of) a series of与a plenty of等词的区别急！中兴ZXDSL 831 Series如何判断有无路由功能？ TP/A was asked to design a series of clubhouses for Orient Golf Club, China has made a series of plans to ___ the times. 1、China has made a series of plans to ___ the times. 帮帮忙China has made a series of plans to ___ the times.