As we all know. of the earth surface is covered by water．( )A．Three foursB．Three fourthsC．Third foursD．Third quarters 题目和参考答案——青夏教育精英家教网——

题目内容

18．As we all know，__________ of the earth surface is covered by water．（　　）

A．

Three fours

B．

Three fourths

C．

Third fours

D．

Third quarters

分析众所周知，地球表面的四分之三都被水覆盖．

解答答案：B．
英语中分数的表达，先说分子数后说分母数，用基数词表示分数的分子，用序数词表示分数的分母．当分子是一时，分数的分母用单数形式，在表示分数时，当分数的分子大于一时，分数的分母要用复数形式，因此四分之三应该表达成Three fourths，故选B．

点评本题主要考查的是分数的表达，先说分子数后说分某数，分子用基数词，分母用序数词，分子数超过"1"时，分母用复数．

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