现在完成时.主语have/has+动词的过去分词.【ever.already] 1陈述句 2一般疑问句 3肯定回答/否定回答.

问题描述:

现在完成时.主语have/has+动词的过去分词.【ever.already] 1陈述句 2一般疑问句 3肯定回答/否定回答.

I have already read this book.
Have you ever read this book?
Yes,I have./No,I havn't.