where were you do last sunday?这里为什么不能用were,而用did
问题描述：
where were you do last sunday?这里为什么不能用were,而用did
答
Are you ok?
答
do是一个动词，用特殊疑问句提问时，特殊疑问词后面加助动词，而were是be动词，句子中提到last Sunday，所以是过去式，did是助动词do的过去式，所以用did。
答
where were you do?I was at home and do my homework where were you last sunday? I was at the shopping center. where were you last
答
因为你要是用were的话,那么以此类推，回答此问题的人就得说I were went to .....而不能说I went to .....显然，正确的回答是i went to ....last sunday.
答
be 动词后出现动词时,习惯于与doing连用,构成进行时态,或者与动词的过去分词连用,构成被动语态.本题中,既没有现在分词,也没有过去分词,因此此处不能与动词原形连用,这是一个语法错误,此句是一个一般过去时态,应该是：特殊疑问词+did+主语+动词原形+其他的结构.因此选用did,而不用were.