问题
改错题
He has changed a lot. He is not what he was used to be.
答案
去掉 was，used to 表示今昔对比
be used to 表示“习惯于”。
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He has changed a lot. He is not what he was used to be.
去掉 was，used to 表示今昔对比
be used to 表示“习惯于”。