我凭语感选了B,麻烦帮我用语法分析一下
问题描述：
我凭语感选了B,麻烦帮我用语法分析一下
______that this region was so rich in natural resources.
A.Little he knewB.Little did he knowC.Little he did know D.Little he had know
答
这是部分倒装句,否定词,或是表示没有、很少的词在句首,后面助动词提前也就是did 其他部分不变