Could you please explain what is the difference between this two:
Mr. Sherlock Holmes was seated at the breakfast table.
Mr. Sherlock Holmes seated at the breakfast table.
Could you please explain what is the difference between this two:
Mr. Sherlock Holmes was seated at the breakfast table.
Mr. Sherlock Holmes seated at the breakfast table.
The second one doesn't make sense. To seat something or someone means "to place something on a seat or seats, or cause someone to sit down". So if Sherlock Holmes was sitting at the table, then he was seated. That construction is the passive voice (to be + the past participle, which is seated) in the past tense (was seated). We often use the passive voice to describe something as though the participle was an adjective: he was tall, he was tired, he was seated, etc.
If you say "Sherlock Holmes seated..." that means he put someone or something else in a seat. But since the sentence doesn't have an object (what did he put in a seat?) it doesn't make sense.
The verb could also be used reflexively; e.g., "Sherlock Holmes seated himself behind a desk," is a valid sentence because the object (himself) is present.