过去式aired,cleaned,opened,sharpened,turned on,listened,boiled,arrived,played,arrived,played,的音标

过去式aired,cleaned,opened,sharpened,turned on,listened,boiled,arrived,played,arrived,played,的音标 air的过去式是aired还是原形 is your classroom cleaned every day?------yes it is为什莫填cleaned的过去式 she is airing the room now 变成过去式she is airing the room now 变为过去式 she aired it yesterday 为什么没有加was she has already aired thd roomhas是have的第三人称现在式,而air又用了过去式,我实在是搞不懂.到底怎么回事,我刚学英语 air的过去式和过去分词air 的 过 去 式 ,和 过 去 分 词.急 急 急 急 急 急 急 急 air 有 Vt.形式 它的过去式和过去分词不是普通形式－－aired，应该是特殊形式 （aired我在金山词霸里查过了 （好 为什么clean的过去式及过去分词不是cleanned而是cleaned? What dose well-aired mean? a commercial aired on television 六年级下册英语第三单元过去式单词的音标及过去式的用法 watched,washed,cleaned,played,visited,以上各单词的音标是?---------------------------------------------------------------------------------------------过去式的 一般过去式和现在完成时在有些时候是不是可以互换的,比如以下例句.如果有人说air the room...我想表达我通过风了不需要在做一次的时候I have already aired the room和i aired the room this morning是不是 Eur Ope Et En France will be aired this coming Monday Hasn't anyone aired this room yet? cleaned the 过去式 过去式! 过去式,