plenty of ,a lot of ,lots of ,a quantity of ,quantities of,a supply of ,supplies of, a mass of, masses of可与可数名词和不可数名词连用a number of ,a variety of , varieties of, a good/great many 后接可数名词复数a good/great many of 后面的名词复数前要有the/these/those/one'sa great amount of, amounts of ,a great/good deal of 后接不可数名词 a sum of 修饰货币
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