英语问题关于growThe workers are going all out to make the output ________three times what if was five years ago.A.grow to B.grow up C.grow by D.grow into

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英语问题关于growThe workers are going all out to make the output ________three times what if was five years ago.A.grow to B.grow up C.grow by D.grow into
英语问题关于grow
The workers are going all out to make the output ________three times what if was five years ago.
A.grow to B.grow up C.grow by D.grow into

英语问题关于growThe workers are going all out to make the output ________three times what if was five years ago.A.grow to B.grow up C.grow by D.grow into
选C.by后加倍数,增长了三倍

A
这题与grow无关
首先分析句子成分,主谓不分析了,直接看to 后面
to make the output grow是目的状语,其中包含了make sth/sb do的结构
后面的to three times what it was five years ago做状语,表示程度
译为:工人们全出外劳作以使产量提升为五年前的三倍。
这里可能会有疑问...

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A
这题与grow无关
首先分析句子成分,主谓不分析了,直接看to 后面
to make the output grow是目的状语,其中包含了make sth/sb do的结构
后面的to three times what it was five years ago做状语,表示程度
译为:工人们全出外劳作以使产量提升为五年前的三倍。
这里可能会有疑问,为什么表示程度不用by,是因为by和to都可表示程度,但含义不同
比如:grow to three times指"增长为三倍",现在是原来的三倍
grow by three times指“增长了三倍”,现在是原来的四倍
在本题中不能说“增长了5年前的三倍”,要说“增长为五年前的三倍”
所以用to,选A

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大意好像是:农民准备使产量增长到五年前的三倍。应该是选grow to,不是很确定!