问题补充:
of the water polluted. We must try to protect our environment.
A. Two third; are
B. Two third; is
C. Two thirds; are
D. Two thirds; is
答案:
A. Two third; are
B. Two third; is
C. Two thirds; are
(答案→)D. Two thirds; is
解析:句意:三分之二的水被污染了。我们必须保护我们的环境。在英语中分子用基数词表达,分母用序数词表达如果分子大于1,分母变复数。分数作主语时,根据其后接的词而定,如果为不可数名词,则相当于单数,如果其后接的为可数名词复数形式,则相当于复数。根据句意,故选D。