Question

_____of his time ___been spent on studies every day. A ,Three fourths :has

B , Three fourths :have
C,Third fours: has
D,Thirds four :have
请选择

Answer 1

___A__of his time ___been spent on studies every day
A ,Three fourths :has
B , Three fourths :have
C,Third fours: has
D,Thirds four :have
解析：分数用“基数词＋序数词”表示，复数形式在序数词后面加s。分数百分数作主语时，关键看后面名词是否可数来决定单复数，time 不可数，故选A。
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Answer 2

__A___of his time ___been spent on studies every day. A ,Three fourths :has

分数表达法，分子用基数词分母用序数词，分子大于1时分母加s

时间作主语看做单数，所以用has

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Answer 3

A ,Three fourths :has

Answer 4

A, 分数，百分数主谓一致看后面名词，所以单数。分数表达先基数词后序数词，分子大于一分母加S。

Answer 5

选择A,分数的表达是：前面用基数词，后面用序数词。又因为时间为不可数，所以用has

Answer 6

这个 选B　分数的表达貌似就是这样的。我印象是这样的。