he does hishomework at home. (改为否定句） she was at home yesterday. (改为一般疑问句)
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第一句：因为does是实意动词，用的第三人称单数，所以在does前面加doesn't ，并且把does还原为do。改为：he doesn't do his homework 。
第二句：因为句子中已经有了be动词，所以直接把was提前。改为：was she at home yesterday。
希望采纳。
第二句：因为句子中已经有了be动词，所以直接把was提前。改为：was she at home yesterday。
希望采纳。
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he does not do his homework at home. was she at home yesterday?
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1、He does't do his homework at home.
2、Was she at home yesterday ?
2、Was she at home yesterday ?
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He doesn't do his homework at home.
She wasn't at home yesterday.
She wasn't at home yesterday.
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He doesn't do his homework at home. Was she at home yesterday?
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