What's this the pencil case Yes ,it is.哪错了

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What''sthisthepencilcaseYes,itis.哪错了What''sthisthepencilcaseYes,itis.哪错了What''sthisthepencilcaseYes,iti

What's this the pencil case Yes ,it is.哪错了
What's this the pencil case Yes ,it is.哪错了

What's this the pencil case Yes ,it is.哪错了
回答yes it is 说明是一般疑问句.
what是特殊疑问词,把what 去掉就可以了.

提问不应该用what

把what去掉 is this the pencil case?Yes it is.