He's never been to Australia before?(改为一般疑问句) ____ he _____ been to Australia brfore?
问题描述:
He's never been to Australia before?(改为一般疑问句) ____ he _____ been to Australia brfore?
答
这是个现在完成时的句子,其中的He's=He has ; has就是助动词.
Has; ever