teach study has stay laugh 都需要过去式
问题描述：
teach study has stay laugh 都需要过去式
答
taught studied had stayed laughed
答
taught studied had stayed laughed ，当然有一些是特殊变化，如果是特殊变化，就需要多看多记。但大部分动词都是词尾后直接加ed,或变y为i加ed，这就需要你老记了。加油
答
teach - taught 【特殊的】
study - studied 【study以一个辅音和一个元音字母结尾,所以要把y改成i再加ed】
has[其实是have ] -had 【这是比较常见的了】
stay - stayed [这单词虽然是以y结尾的,但倒数第二个字母是元音字母,所以是直接加ed,特殊]
laugh - laughed [这是一般的直接加ed]
答
taught
studied
had
stayed
laughed