这个不确定啊.
如 Three fourths of the information is new.
How much of the information is new?
Three fourths of the students are new.
How many of the students are new?
如果three fourths 是指不可数名词或单数名词的“四分之三”,用How much
如果three fourths 是指复数名词的“四分之三”,用How many
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