because 引导的从句中 its weight 中代词指代 coin, lighter than it is for,it指代不清。理论上为使句子中代词指代一致,it应该也指代coin,则不合逻辑
1.没有for导致歧义 2.weight 不能lighter
“ its weight of only 8.1 grams is far lighter than it is for four quarters,”1)"the weight...is far LESS than"更好。单说物体的话轻重更好,但是如果说重量,他本来就是个数,多少比较好。 2)it是完全指代,即这里后面的it指代的是weight of only 8.1 grams,意思错误。3)正确选项中“ it weighs only 8.1 grams, far less than four quarters ”的句子中,it指代的是the Sacagawea dollar coin,而far less than four quarters其实可以理解为是之前句子中weighs动词的状语,修饰的是这个动词。即也可以写成:"it weighs, far less than the four quaters(weigh), which weigh 5.67 grams each, only 8.1 grams." 主谓结构比较,后来的谓语weigh省略。
这里than后面的it指代its weight完全同样的东西
more than后没有for,有歧义;it指代有问题
(D) more than 后面省略介词for使句子产生歧义;it没有指代对象,根据句意it应该指weight,不能指代its weight,因为原句是将dollar的 weight和for quarter的weight进行比较,两个weight不同,如果用it指代,则不符合逻辑。
weight is less (not light!!!!!)
more than后面应该有介词for; it根据语法指代的是its weight,原句是将dollar的 weight和for quarter的weight进行比较,两个weight不同,如果用it指代,则不符合逻辑。
more than后面省略for使句子有歧义
far lighter than前后比较不对等
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