half an hour passed since the train leaved.中文翻译

half an hour passed since the train leaved.中文翻译 I pasted the exam easily.还是I passed the exam easily.或者说两个都可以吗？还有是half an hour passed,还是half an hour past a half hour还是half an hour? 是half hour还是half an hour? half an hour or a half hour? half an hour later half an hour造句 Half an hour. “我经过半个小时的练习译成I train passed half an hour我经过半个小时的练习译成I train passed half an half hour =half an hour half hour half an hour 的意思有和区别? half an hour （ ） 填past/passed/has past/has passed 原因?pass 的过去分词不是past吗?那passed是什么单词的过去分词? an hour and half还是an hour and a half Half an hour has passed since the train left请问,为什么要用现在完成时,想说明什么? A light was still on and the man waited until it went out.After about half an hour had passed, half an hour or hour中文 after half an hour.是什么意思 half an hour? 什么意思? Half an hour =什么?