there be句型中带情态动词的完成时态的反意疑问句如There must have been more than three hundred students in our school ten years ago.这一句话的疑问部分是“Isn't there?”还是别的什么?请给予详细讲解.
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 05:43:54
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