专题:
a variety of后面既可以接可数名词，也可以接不可数名词。在接可数名词的时候一定要变复数形式。
a variety of与varieties of
1）首先,a variety of和varieties of的用法是一样的，只是样子不一样罢了。
2）二者即可修饰可数也可修饰不可数名词。
3）作主语时，后面谓语动词的单复数要根据of后的名词单复数而定。如a variety of(或varieties of)books后面要用are，因为中心词始终是books，不要被前面的修饰词迷惑。
4）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…”eg.
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。
1)A variety of food is sold at a supermarket.超级市场各式各样的食物均有出售。
2)Many varieties of natural soaps of are sold in the market.
3)We’re going to grow a new variety of wheat this year.今年我们要种植一种新品种的小麦。
2．varieties of+复数形式，谓语动词用复数
1)New Varieties of Food Additives, which were deliberated......
2)New Varieties of food has not yet been found by human.
3.the variety of的意思是“…品种,种类”
1)The variety of goods in this shop is rich. 这家商店的货物品种丰富。
2)Varieties of books are being sold at this bookshop.
a variety of例句
Sectors in the economy can be viewed in a variety of ways
可以以多种方式看待经济的构成。
We're moving forward on a variety of fronts.
我们正在多个方面向前推进。
West Hampstead has a variety of good shops and supermarkets
西汉普斯特德有各种各样不错的店铺和超级市场。
People change their mind for a variety of reasons.
人们会由于种种原因改变主意。
A variety of heavy industries grew up alongside the port.
各种重工业沿着港口逐渐发展起来。