请英语大牛们帮忙!By how much did some cyclists's performance improve

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/06 08:37:19

请英语大牛们帮忙!
By how much did some cyclists's performance improve at the 1996 Olympic Games?请问by舍去可以么为什么?什么时候用improve 什么时候用improve by 是不是可以写成陈述句如some cyclists's performance improve by 2% at ...可不可以写成some cyclists's performance by impoving然后加个动词原型组成一句话?

By可以省,但是省不省意思不一样.By how much 问的是提高的具体数字,how much问的是提高的大概情况/程度.
By how much did.在1996年奥运会上,一些自行车赛手的表现提高了多少?
回答可以是：Improved by 2%.或 By 1/3.等.
How much did...在1996年奥运会上,一些自行车赛手的表现提高得如何?
回答可以是：Improved greatly.或 Not much.等.
陈述句可以写成Some cyclists' performance improved by 2% at...
还可以写成Some cyclists' performance has a 2% improvement at...
不能写成Some cyclists' performance by improving...
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