Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?

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Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?

Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?
Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?

Have you ever been abroad; Have you ever traveled by air;把句中的been去掉有什么区别?
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

一个是完成时,一个是过去式

如果第一句去掉been就没有动词了