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这个句子是什么语法现象?

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/22 16:52:14
这个句子是什么语法现象?
its motions must certainly be directed by invariable laws; and could we imagine another world,it must also have constant rules
其中的and could we imagine another world,为什么情态动词could可以放在主语之前?
倒状不大可能,根据 it must also have constant rules,估计是问句,后面一句是回答前面一句的.