4.The film is very interesting._______students have seen it.

问题描述:

4.The film is very interesting._______students have seen it.
A.a plenty of B.Many of C.A great many D.Two hundreds
5._____of the trees in the garden are apple trees.
A.Two-third B.Two-thirds C.Second third D.Second thirds

1题选C,A修饰不可数名词,B后不加of,D项表达错误,要么用基数词+hundred,不论该数有多大,plenty始终保持单数形式,要么直接用hundreds of意为成百上千的.
2题选B,记住这样一个顺口溜以后这类题就不用愁了:分子基数词,分母序数词,分子大于一,分母加s.这样一看答案不就很明显了吗!