They were having lunch at 12 o'cioch yesterday.(改为一般疑问句)
问题描述：
They were having lunch at 12 o'cioch yesterday.(改为一般疑问句)
答
你好，同学，很高兴回答你的问题
正确答案：
Were they having lunch at 12 o'clock yesterday?
翻译：昨天12点时他们在吃午饭吗？
解析：这是过去进行时的一般疑问句，带有be动词的句子变成一般疑问句，只要把be动词提前即可，后面用问号。
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不明白请继续追问，可以详谈嘛(*^__^*)
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答
Were they having lunch at 12 o'clock yesterday?
答
They were having lunch at 12 o'cioch yesterday.
一般疑问句：Were they having lunch at 12 o'clock yesterday?
答
were是are的过去式，句中有be动词的，变一般疑问句要把be 提前，所以
Were they having lunch at 12 o'clock yesterday?