An adverb my come before or after the verb it is describing. It is fine to say "using correctly" and to say "correctly using".
One hesitation would be if you are using an adverb to describe a verb in its infinitive form. Traditionally it has been considered incorrect to use the adverb before the verb. This is called a split infinitive. So if unless you're an established author, stay away from using phrases like "to correctly use".
The correct grammar is "using correctly." This phrase follows the standard English word order of adverb + verb.
"Yes, this is he" is correct grammar. It is the preferred way to answer the phone when someone is asking for you by name. Using "he" instead of "him" is grammatically correct in this context.
No, the grammar is not correct. The correct way to say it is "You have to have it cleaned."
Yes, "To those who are Irish" is correct grammar. It is a prepositional phrase that correctly identifies a specific group of people.
No, the correct grammar is "you and Bob." Using "and" helps to combine the two entities into a single unit, emphasizing that both "you" and "Bob" are part of the same group.
No, "Is was able to confirmed" is not correct grammar. The correct phrase would be "It was able to be confirmed."
No, correctly you would say you "wish you had gotten married".
"Yes, this is he" is correct grammar. It is the preferred way to answer the phone when someone is asking for you by name. Using "he" instead of "him" is grammatically correct in this context.
Yes, that is correct grammar.
Yes, "you were correct" is correct grammar. This sentence is in the past tense and conveys that someone was right about something.
This should say, The next stop will be somewhere in Vasayas, then it will be correct grammar. Written as it is it is not on correct grammar.
No, it is not correct
No, "Is was able to confirmed" is not correct grammar. The correct phrase would be "It was able to be confirmed."
PROGRAMER Or: programmer. Using the correct spelling (so tempted to say grammar).
Yes
Absolutely.
No, The correct grammar for this sentence would be, "He finished doing his homework."
It is not correct to say "they has studied". The correct way is to say "they have studied." There are many different places that a person can check grammar questions such as English grammar websites.