To turn a sentence into a yes/no question, the be-word jumps to the very front.
Move the verb be to the front
You are tired. → Are you tired?
She is here. → Is she here?
They are ready. → Are they ready?
Not "You are tired? (this is still a statement)" — say "Are you tired? (now it asks)". The order makes the question, move the be-word to the front.
Try it: You are tired. Make this a question. Answer: Are you tired? — For a yes/no question, the be-word jumps to the front: Are you tired? "You are tired?" is still a statement, the order makes the question.
Start with the question word
For a where / what / who question with be, the question word goes first, then the be-word. Each question word asks about one thing: where asks about a place, what asks about a thing, who asks about a person.
Amina is at home. → Where is Amina?
This is a cat. → What is this?
She is happy. → Who is happy?
Not "Where Amina is? (this is the statement order)" — say "Where is Amina? (question word first, then is)". Put the question word first, then move is in front of the name.
Try it: Amina is somewhere. Ask where Amina is. Answer: Where is Amina? — In a question the is comes before Amina: Where is Amina? "Where Amina is" is the order for a statement.
Where is Amina? — She is at home.
What is this? — It is a cat.
Who is happy? — Amina is happy.
Where — asks about a place
What — asks about a thing
Who — asks about a person
Asking about what people do
To ask what someone does, start with the question word, then do or does, then the plain action word. Use does for he, she, it; use do for you, we, they. The question word can be where (a place), what (a thing), or when (a time).
Amina lives somewhere. → Where does Amina live?
They live somewhere. → Where do they live?
Mei likes something. → What does Mei like?
Mei reads at some time. → When does Mei read?
Not "Where Amina lives? (this is the statement order)" — say "Where does Amina live? (with does, the action word is plain)". After does, use the plain word: live, not "lives".
be or action word?
Look at the sentence first. If it already has is / are / am, move that be-word to the front: She is happy. → Is she happy? If it has an action word like work, live, read, use do or does: She works. → Does she work?
She is happy. → Is she happy? (has is)
She works. → Does she work? (has an action word)
They are ready. → Are they ready? (has are)
They live here. → Do they live here? (has an action word)
Not "Is she work? (there is no be-word in "She works")" — say "Does she work? (an action word needs does)". No is / are / am in the sentence? Then use do or does, not a be-word.
Try it: Make "She works." a question. Which one is correct? (Does she work? / Is she work? / Do she work?) Answer: Does she work? — "She works" has an action word and no is / are / am, so use does: Does she work? "Is she work?" reaches for a be-word that isn't in the sentence, and "Do she work?" needs does for she.
Try it: Make "She is happy." a question. Which one is correct? (Is she happy? / Does she happy? / Does she be happy?) Answer: Is she happy? — "She is happy" already has the be-word is, so move it to the front: Is she happy? There is no action word here, so does does not belong.
Try it: Amina lives somewhere. Ask where Amina lives. Answer: Where does Amina live? — Start with Where, then does, then the plain word live: Where does Amina live? With does in front, the action word stays plain.
Try it: They live somewhere. Ask where they live. Answer: Where do they live? — With they, use do (not does): Where do they live? Save does for he, she, it. The action word stays plain after both.
Try it: Mei reads at some time. Ask when Mei reads. Answer: When does Mei read? — Start with When, then does, then the plain word read: When does Mei read? With does in front, the action word stays plain.