My English teacher taught me that "I saw him crossed the street" was correct. But I'm not sure that the sentence is correct because I have never seen it like that in any writing. I've ever read sentences like "I saw him cross the street" and "I saw him crossing the street" In case that is correct, please teach me what it means.
And he also said "I saw him to cross the street" was wrong. However, the dictionary says the sentence is correct only in the written language and the passive voice.