He's never lost a book before(改反意疑问句) He's never lost a book before,___ ___ ?帮帮忙、谢啦
问题描述：
He's never lost a book before(改反意疑问句) He's never lost a book before,___ ___ ?
帮帮忙、谢啦
答
has he
答
has he;前面的never已经是否定了,后面用肯定.