travelled和traveled哪个是adj哪个是过去式?

travelled和traveled哪个是adj哪个是过去式? traveled和travelled到底哪个对请详细解释一下traveled和travelled,到底哪个是travel的过去是.其中一个是错的,还是2个都对用处不一样?如果2个都对请解释他们的用法. travel过去式是traveled还是travelled, travel变为过去分词和过去式后面直接+ed还是要双写“l”?怎么有的是traveled.有的是travelled.是不是都可以? 是travelling还是traveling?是travelled还是traveled? His a tour guide.He ___ all over EuropeA,travelled B traveled to C has traveled D has traveled to 什么时候 是 traveled to+地点 什么时候是 traveled +地点 I (toured/traveled) China last year.选什么,为什么?我是拼错了，应该是travelled我是问为什么用toured （闭音节）像travel这种重读不在的vel,可以为travelled,也可以是traveled也是什么意思, there is nothing (travelled/travelling) faster than light 选哪个? 英语中,有关直接引语与间接引语的一道选择题.The professor said that light （ )faster than sound.A travelled B traveled C travel D travels travelled是什么意思? wel-traveled have you ever______to Hangzhou Park?visited toured gone traveled选哪个为什么谢了 they have all been put to shame by a boy who,while playing truant,travelled 1600 miles.请问为什么是travelled,过去分词形式,我觉得travel和boy是主动关系,应该用travelling然后travelled是非谓语吗, travel和signal 的过去式是 travelled 和 signalled 不是要重读才需要嘛? travelled的过去式 well-travelled是什么意思 travelled用于什么句式