a variety of与varieties of后加什么名词？谓语用单数还是复数形式

1：a variety of + 复数形式,谓语动词用单数：
I have a variety of books at home.Society is made up of a variety of people.A variety of other drying places was devised.
2：varieties of + 复数形式,谓语动词用复数
We offer over 100 different varieties of Corn Snakes.Varieties of Lattices .New Varieties of Food Additives,which were deliberated .
类似这类量词都是一致的,比如a great amount of 和 great amounts of.

温馨提示：答案为网友推荐，仅供参考

当前网址：https://verywind.cn/ee/eefxvjyfrjr733v3r22.html