英语句型转换 四道
问题描述：
英语句型转换 四道
john knew something about that news.(改一般疑问句）
jane's never been to tuvalu before.（改反意疑问句）
Peter gave a birthday gift to his sister?(对a birthday gift 提问）
i brought this book three weeks ago(事态转换）
答
过去式：Did John know something about the news?
完成时(前否后肯）：Jane has never been to tuvalu before,has she?
过去式：What did Peter give to his sister?
过去式转完成时：I have kept this book since three weeks ago.