1. Evenings, we sit at home and watch TV.

2. Every evening, we sit at home and watch TV.

3. In the evenings, we sit at home and watch TV.

4. In the evening, we sit at home and watch TV.
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Thank you for your help......In the sentences above, does #1 mean #2 or #3? Is #4 diferent, then? Am I right?

They all mean about the same thing, but #1 is rarely used.

In the given sentences, the usage of "evenings" and "evening" may slightly affect the meaning. Here's a breakdown:

1. "Evenings, we sit at home and watch TV."
This sentence implies that on multiple evenings, we sit at home and watch TV. It does not specify if this happens every evening or only occasionally.

2. "Every evening, we sit at home and watch TV."
This sentence indicates that each and every evening, we have the habit of sitting at home and watching TV. It suggests a regular and consistent routine.

3. "In the evenings, we sit at home and watch TV."
This sentence suggests that during the unspecified evenings, we sit at home and watch TV. It does not indicate if it's a daily or occasional activity.

4. "In the evening, we sit at home and watch TV."
This sentence specifically refers to a particular evening, emphasizing that during that single evening, we sit at home and watch TV.

To summarize:
- Sentence #1 does not indicate whether it's a regular occurrence or not.
- Sentence #2 implies a daily practice.
- Sentence #3 suggests a general statement without specifying frequency.
- Sentence #4 refers to a specific evening.

It should be noted that the interpretation of these sentences may vary depending on the context.