he hurt himself yesterday 改为否定句和疑问句

he hurt himself yesterday 改为否定句和疑问句

题目
he hurt himself yesterday 改为否定句和疑问句
答案
He didn't hurt himself yesterday. (否定句)
Did he hurt himself yesterday? (一般疑问句)
When did he hurt himself? (特殊疑问句之一)
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