When drive-ins were at the height of their popularity in the late 1950's, some 4,000 existed in the United States, but today there are less than one-quarter that many.
When drive-ins were at the height of their popularity in the late 1950’s, some 4,000 existed in the United States, but today there are less than one-quarter that many.
A. there are less than one-quarter that many
B. there are fewer than one-quarter as many
C. there are fewer than one-quarter of that amount
D. the number is less than one-quarter the amount (C)
只有b在可数不可数上是一致的。one-quarter as many 就是 one-quarter of that number的意思。
Wrong! According to Longman Dictionary: amount,
[uncountable and countable] 1 a quantity of something such as time, money, or a substance amount of They spend equal amounts of time in California and New York. a considerable/large/enormous etc amount a considerable amount of money a small/tiny etc amount a tiny amount of dirtPlease pay the full amount (=of money) by the end of the month. 2 used to talk about how much there is of a feeling or quality a large/considerable etc amount of something Her case has attracted an enormous amount of public sympathy. a certain/fair amount of something Dina encountered a fair amount of envy among her colleagues. 3 no amount of something can/will etc do something used to say that something has no effect No amount of persuasion could make her change her mind. 4 any amount of something used to say that there is plenty of something, and no more is needed The school has any amount of resources and equipment.