The word "infer" means to draw an inference. It is used in many different ways, but it can mean that someone draws conclusions from facts or evidence presented by others. For example, if I say, "I inferred that he was lying," then I am saying that I drew my conclusion about his honesty based on what I saw and heard him do.
In your sentence, "Why didn't she infer?" you are asking why the person did not make any inferences at all when they were given information. The answer would be because there wasn't enough information available to them to make such inferences. If we had more details about her situation (e.g., how long she has been working as a waitress), perhaps we could have made some better guesses about whether she will get fired.
If you want to use the verb "to infer", you need to specify which kind of inference you are talking about. You might ask something like, "What kinds of things does she infer?", or "How often does she infer?".
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The word "infer" means to draw an inference. It is used in many different ways, but it can mean that someone draws conclusions from facts or evidence presented by others. For example, if I say, "I inferred that he was lying," then I am saying that I drew my conclusion about his honesty based on what I saw and heard him do.
In your sentence, "Why didn't she infer?" you are asking why the person did not make any inferences at all when they were given information. The answer would be because there wasn't enough information available to them to make such inferences. If we had more details about her situation (e.g., how long she has been working as a waitress), perhaps we could have made some better guesses about whether she will get fired.
If you want to use the verb "to infer", you need to specify which kind of inference you are talking about. You might ask something like, "What kinds of things does she infer?", or "How often does she infer?".