He tried all his teachers' patience.
Yes, that is correct.
It depends how you use it. If you use it after something it can be correct. But being in a sentence by itself isn't correct.
If you use 'you and he' as the subject of the sentence, it is correct: You and he will meet when we get to the restaurant.
Use is present. Used is past. The correct sentence is, This is used for....
Yes, the objective, personal pronoun 'him' functioning as the object of the preposition 'at' is the correct form.However, the preposition 'at' is a bit clumsy. A more appropriate preposition in this sentence is 'for'.Example: Both the teachers and the students were delighted for him receiving such high scores.This is easier to see when the sentence is simplified, "Teachers and students were delighted for him."
The pronoun in the sentence, 'him', is correct if the one the sentence refers to is a male. The pronoun 'him' is a singular, objective, personal pronoun which is functioning as the object of the preposition 'at'.The preposition 'at' is not the best choice, a better choice is 'for' (were delighted for him).Note: The word 'both' can function as an indefinite pronoun when it takes the place of a noun. However, in this sentence, it functions as an adjective, describing the nouns 'teachers and students'.Example use as a pronoun: The teachers and the students were both delighted...
Your teachers may surmise that you wrote this sentence but they would be wrong.
It's not clear - I think you mean, "Either the students or the teachers can join." Or perhaps you mean, "Both students and teachers can join."
Teachers day is correct because it is for all teachers
Your sentence is structurally correct.
Use do when the subject of the sentence is plural egWe do, They do, The teachers do.Use does when the subject of the sentence is singular egHe does, She does, It does, The teacher does.The teacher does nothing all day.The teachers do nothing all day.
There is no use of THE in the sentence. FROGS HOP can be considered as correct too.