2 Structure and sentence functions
In most examples you’ll come across, the grammatical form of a sentence will match the function it performs. A question will look like an interrogative, and a command will look like an imperative. But this relationship doesn’t hold all the time. We can use a declarative to ask a question or give a command:
You expect me to believe that? (not Do you expect…?)
It’s cold in here (in the right context, this could mean ‘shut the window’)
We can use a question to give a command:
Would one of you two like to do the washing up? (when spoken by a parent to two teens)
And, as with Spanish, we can use a statement to ask a question if we say it with rising intonation (or use a question mark):
Susan is a trained scuba diver?