Sentence examples for couldn't know from inspiring English sources
Suggestions(5)
The phrase "couldn't know" is grammatically correct and can be used in written English.
It is commonly used in spoken and written English to convey the idea that someone was unable to have knowledge or awareness about something. Here is an example: "I couldn't know that you were allergic to peanuts, otherwise I wouldn't have served you that dish." In this sentence, the speaker is expressing that they did not have knowledge about the other person's allergy and it was not their intention to harm them.
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