once作曾经的用法Li Yong,once a good student当中的once是曾经的意思吧?那为什么后面不用加be?应该是be a good student吧we should do something to make our class a better one.make our class a better one?这个也不用加be吗?

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 19:42:28
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