But with AI, computers learn to find cancers based on the actual results of thousands of mammograms.
1. based on the actual results of thousands of mammograms 是状语还是后置定语?
2. 分词作状语必须与主句用逗号隔开吗?
based on the actual results of thousands of mammograms,是 learn to find 的“方式状语”。意为:“根据......的实际结果(来发现癌症)”。如果是 cancers 的定语,语义根本讲不通。
分词作状语,可以与主句用逗号隔开,也可以不。
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