用 where / what / who 加 be 提问时，疑问词放最前面，然后是 be 动词。每个疑问词问的东西都不一样：where 问地点，what 问事物，who 问人。
以疑问词开头
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)". 先放疑问词，再把 is 移到名字前面。
试一试: Amina is at the library. 问一问 Amina 在哪里。 答案: Where is Amina? — 疑问句里 is 放在 Amina 前面：Where is Amina? "Where Amina is" 是陈述句的顺序。
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
How are you?
How 问的是一个人怎么样。回答用 fine、good 这样的词，不是地点，也不是东西。
How are you? I am fine, thank you.
How is Lars today? He is tired.
How are you this morning? I am good.
Not "Where are you? (this asks about a place)" — say "How are you? (this asks about you today)". How 问的是一个人怎么样。
试一试: ___ is Lars today? - He is fine. (How / Who / Where) 答案: How — "He is fine" 说的是 Lars 怎么样，所以疑问词是 How。Who 问的是哪个人，Where 问的是地点。
用 be 回答
你的回答里也要有 is、are 或 am。看回答说的是谁或什么东西，选合适的那个：It is… / They are… / I am…
Where is Sofia? She is at work.
Where are the keys? They are in my bag.
Where are you? I am at home.
Not "Where is Sofia? She at work." — say "Where is Sofia? She is at work.". 回答里也要有 is、are 或 am。
试一试: Lars: Where are your keys? Sofia: They ___ in my bag. 选出能补全 Sofia 回答的词。 (is / are / am) 答案: are — They 指不止一个，所以回答要用 are：They are in my bag. is 配一个人或一样东西，am 只配 I。