Your idea is fundamentally wrong.
你的想法根本上就是错误的。
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今天的几个句子是有关否定的：1.Are you saying you're better than I am? 你是说你比我出色吗？2.Haven't you been abroad? 你还没去过外国吗？3.We don't agree on this point. 在这一点上我们意见分歧。4.I didn't say that. 我没说那事。