Posted by rfvv on Thursday, March 27, 2014 at 3:16am.

1. In the evening, Sonya's father cooks dinner.

2. In the evenings, Sonya's father cooks dinner.

3. Evenings, Sonya's father cooks dinner.

4. Every evening, Sonya's father cooks dinner.

(What is the difference of the four sentences in meaning?)
English - Writeacher, Thursday, March 27, 2014 at 8:17am
I don't see any difference among the four sentences in meaning.

However, I do think sentences 1 and 4 are the best.
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1. In the evening, Sonya's father will come.
2. In the evenings, Sonya's father will come.
3. Every evening, Sonya's father will come.
4. This evening, Sonya's father will come.
(What is the difference among them? Which one is grammatical in this context?)

There needs to be something after the word "come" -- perhaps the word "home" or the prepositional phrase "to the party" or something.

Otherwise, they're OK.

The difference among the given sentences is in the time frame and the level of specificity.

1. "In the evening, Sonya's father will come."
This sentence implies that Sonya's father will come at some point during the evening, without specifying a particular evening.

2. "In the evenings, Sonya's father will come."
This sentence suggests that Sonya's father will come on multiple evenings, but it still doesn't specify which evenings.

3. "Every evening, Sonya's father will come."
This sentence indicates that Sonya's father will come on every evening, without exception. It implies a regular, recurring action.

4. "This evening, Sonya's father will come."
This sentence is specific to a particular evening, implying that Sonya's father will come tonight.

In terms of grammaticality in this context, all the sentences are grammatical. The choice depends on the intended meaning and the level of specificity desired.