英语语法问题be supposed toPatents are supposed to encourage innovation,not stifle it.这句看到以前有人问过,说not前后表并列.我的理解是我们应该……而不应该……那为什么not 后面不加to呢?be supposed to 应该
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/10 19:32:01
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