Question

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

Answer 1

.a variety of + 可数名词复数形式，谓语动词用复数; a variety of + 不可数名词，谓语动词用单数
varieties of + 复数形式，谓语动词用复数
a variety of是“多种多样的……”或 “一种…”，the variety of的意思是“…品种, 种类”；
而varieties of的意思是“多种多样的…；各种…”
用法一样，只是形式不同，谓语动词根据of后面名词决定。二者即可修饰可数也可修饰不可数名词

Answer 2

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.