作业帮高一英语改错题：改错：Father was sitting on the sofa at ease while mother was preparing for lunch.
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高一英语改错题：改错：Father was sitting on the sofa at ease while mother was preparing for lunch.
高一英语改错题：
改错：Father was sitting on the sofa at ease while mother was preparing for lunch.
高一英语改错题：改错：Father was sitting on the sofa at ease while mother was preparing for lunch.
Father sat on the sofa at ease while mother was preparing lunch.
sit 不需要用进行时,并且prepare是及物动词,不需要加介词for.
while两边不能有时态一致，所以应该改动后面的was ing为ed
Father was sitting on the sofa at ease while mother was prepared for lunch.
我认为这个句子没有错