What are you doing is the correct 'saying' or pronounciation. What you doing' is slang and is slightly shortened to make life easier, and of course we understand it.
No, The correct grammar for this sentence would be, "He finished doing his homework."
DBA or d/b/a
The grammar appears correct even though it is heard more like, "He is capable of doing this job."
The correct answer is, they are doing their homework now, or they will do their homework now. The word do can be used as an action verb or an auxiliary verb.
You need to give the context if you want a sensible answer. To do is the infinitive.
The phrase "How is she doing?" is grammatically correct. It is a common way to inquire about someone's well-being or current status.
Were doing this is correct.
The correct phrasing is "you are doing it." This is the present continuous tense, indicating an action that is currently happening.
A correct way to ask this question is, "What were you doing before?"
Could you please provide more context or details about what "they" are doing in order for me to determine if it is grammatically correct?
No, The correct grammar for this sentence would be, "He finished doing his homework."
It seems correct.
The sentence 'A school housed in the church is doing well,' is grammatically correct.
yes
No. It should say "How is Fred Martin doing?"
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'.
'The football team is doing well!'