Yse, in the right context; for example "She had had enough", "Henry had had bad reviews before" or "Bob explained that Keith had had a bad experience before coming to work for the firm". In these cases, the use of "had had" is the Past Perfect Tense of the verb "to have". One major use of this tense is to show that something began in the past and continued until another point in the past.
What more can you ask
No, "will be had" is not a correct grammar. The correct grammar would be "will have."
Yes, the word "person" can be made plural by saying "persons" or "people". However, the word "people" sometimes means "tribe"; therefore, it can be made plural by saying "peoples", meaning "tribes".
The correct grammar is: "Are those correct?"
Two types. By saying there are two 'types' you are already stating that there are 2 differentthings and so the word 'different' isn't necessary.
What more can you ask
Depends on the context of the sentence, but yes, most of the time
No, "will be had" is not a correct grammar. The correct grammar would be "will have."
My spelling and grammar are excellent. The subject--spelling and grammar--is plural and therefore takes a plural verb. An easy "ear test" is to substitute simpler words. You would say, "It is excellent." You would also say, "They are excellent." Saying "spelling and grammar" is like saying "they" in this context.
No, it is correct grammar, not a correct grammar.
"On a train" is correct grammar.
no_____If the sentence is You do do that (meaning You are in the habit of doing that) the grammar is perfectly correct and the sentence 'does have correct grammar'.
"July has just been started" is not correct grammar, instead the correct grammar is "July has just started."
Grammar.
This will be an exciting month is correct grammar.
The grammar is correct as it is.
No. The correct grammar is "would give"