(G)first/only/single + 单/复均可
the first school 第一所学校
the first schools 第一批学校
a single + 单可 two single rooms 两个单人间
no single + 复可
only 表示排他性,而不是表示“一个”
(H)hundred,thousand,million,billion
考察数词和量词的区分: 有数词时,量词一定加s
无数词时,量词一定加s+of
five hundred boys, hundreds of boys, hundred million boys
(I)another + 单可,也可以间接加复数名词:another two girls
other + 复名(纯粹的other)
例外:other part .(part 永远对)
(J) a number of + 复noun. + 复Verb
the number of + 复noun. + 单verb
The amount fo leisue time is increasing