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来源：学生作业帮助网 编辑：六六作业网 时间：2024/07/08 22:10:25
所有所有 所有否定：Iamnotwritingane-mail.He/Sheisnotwritingane-mail.We/Theyarenot writingane-mail.一
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否定：I am not writing an e-mail. He/She is not writing an e-mail. We/They are not writing an e-mail.
一般疑问： Am I writing an e-mail? Is he/she writing an e-mail? Are we/they writing an e-mail?
句型替换：They are walking to school now. These children always watch cartoon.
否定： I was not a student many years ago.
时间太短了 再给我5分钟时间.