题目内容：

what is in the pencil box?there are two pen in t
what is in the pencil box?
there are two pen in the pencil box.这种回答可以么,前后be动词不一致啊

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what is in the pencil box?这里的be动词用单词,代表说话人不确定有多少东西,当然也可以理解为习惯用法there are two pens in the pencil box.这是THERE be 句型 be动词的单复数取决于后面的主语,这里是复数,所以用a...