Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?
问题描述：
Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?
答
如果第一句去掉been就没有动词了
答
一个是完成时，一个是过去式
答
第一个句子,been是相当于系动词,比如说get things done,是不能去掉的,两句都是完成时态,绝对没错