3.你出过国吗? have you ever been aborad? been 的原形是be 还有不同的表达形式 am is are was were 其实还是be 后面跟什么成分构成什么时态,建议你多看看有关于 be这个助动词的用法,再结合这个现在完成进行时学习。加油!!!!!!!
第2个回答 2012-08-27
1. Have you ever been to Beijing? 2. Have you ever been trying this new ice cream? 3. Have you ever been abroad? 4. Have you ever been away from home for a long time?