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2.They have found the lost books already.(改为一般疑问句,并作否定回答) __

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2.They have found the lost books already.(改为一般疑问句,并作否定回答) ______ they _______ the
2.They have found the lost books already.(改为一般疑问句,并作否定回答)
______ they _______ the lost books _______?No,they________.
Have they found the lost books yet?No,they haven't.
在现在完成时中,有肯定句变成否定或者疑问时,already 要转变成yet
have在这里做助动词用了,而不是实义动词,根据:用什么提问用什么回答,所以要用have回答