We can see that is a pear.改为否定疑问句（ ） （ ）see that is a pear?顺便说一下The boy behind the door is Tom.对画线部分提问，画线部分是behind the door

We can see that is a pear.改为否定疑问句（ ） （ ）see that is a pear?顺便说一下The boy behind the door is Tom.对画线部分提问，画线部分是behind the door
We can see that is a pear.改为否定疑问句（ ） （ ）see that is a pear?
顺便说一下The boy behind the door is Tom.对画线部分提问，画线部分是behind the door

We can see that is a pear.改为否定疑问句（ ） （ ）see that is a pear?顺便说一下The boy behind the door is Tom.对画线部分提问，画线部分是behind the door
答案是 Can't you
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We can see that is a pear.
改为否定疑问句（ Can't） （ we）see that is a pear？
The boy behind the door is Tom.对画线部分提问，画线部分是behind the door
Which boy is Tom?

否定动词can 变为can’t 或者cannot
疑问句：主语we 与谓语can 换位置就可
句末改问号

即Can’t we see that is a pear？