现在进行时肯定句否定句疑问句结构-现在进行时的肯定句否定句疑问句-现在进
现在进行时的句子： 肯定句：Hes reading an interesting book. 否定句：He isn‘t reading an interesting book. 一般疑问句：Is he reading an interesting book? 肯定回答：Yes， he is. 否定回答：No， he isnt. OK?...
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现在进行时的句子： 肯定句：Hes reading an interesting book. 否定句：He isn‘t reading an interesting book. 一般疑问句：Is he reading an interesting book? 肯定回答：Yes， he is. 否定回答：No， he isnt. OK?...