Her dog is 2 years变为不定句怎么变?He is doing his homework怎么变复数句?

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Her dog is 2 years变为不定句怎么变?He is doing his homework怎么变复数句?
Her dog is 2 years变为不定句怎么变?He is doing his homework怎么变复数句?

Her dog is 2 years变为不定句怎么变?He is doing his homework怎么变复数句?
请问什么叫“不定句”?变复数的那个:They are doing their homework

Her dog is 2 years 应该是Her dog is 2 years old .吧?应该是变为否定句吧?如果我猜对了,那就是: Her dog isn't 2 years old, He is doing his homework.变成复数句应该是: They are doing their homework. 祝你学习进步!