要原因,我会感谢你的( )The train runs ______about 120 miles an hourA o

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/18 19:48:13

要原因,我会感谢你的
( )The train runs ______about 120 miles an hour
A on B in C at D for
( )The seller reduced the price_two yuan
A by B for C in D of

第一题选A
意思是火车的运行速度大约是一小时120米.
首先可以排除in
其次,我们说以什么速度会用到at a speed of
再然后就是for ,run for 感觉有点这个for 有类似为了sth的意思.
第二题选A
by 在这表示降价的幅度.就是卖者降价2元.
其实这两个题目都是考察你怎么区分in ,on,by,of ,at等常用词的用法.要把握他们,简单来说就是要知道意思.
再问：不是at a speed of 吗，怎么是a呢
再答：汗。。

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