----a dog lived with your family ,it would watch you cooking...答案是if,when为什么不可以?

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----a dog lived with your family ,it would watch you cooking...答案是if,when为什么不可以?
----a dog lived with your family ,it would watch you cooking...答案是if,when为什么不可以?

----a dog lived with your family ,it would watch you cooking...答案是if,when为什么不可以?
如果用when ,根据句意,就是过去时,后面就该用 watched

由后边的句子的would的可知这句考点是虚拟语气,如果用when,后边应该用过去的时态。还有不懂的话可以追问。望采纳!!