改错：Nevertheless,mylaterexperienceprovesthatpracticingca...

问题详情：

改错：Nevertheless, my later experience proves that practicing calligraphy was both necessary and beneficial.

________________________________________________________________________

【回答】

proves→proved　根据后面的was可知，发生在过去的事情，故将proves改为proved。

知识点：一般过去时及其被动式

题型：短文改错