问题描述：
一个初学者关于英语语法的几个问题,先请进.
She tried her best,she falied,however.为什么try要加ed呢,try不也是动词吗?
His address headed the letter.同样的,为什么head也要加ed呢.求教.
She tried her best,she falied,however.为什么try要加ed呢,try不也是动词吗?
His address headed the letter.同样的,为什么head也要加ed呢.求教.
问题解答：
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