I have a question….
Bear in mind that, although in Spanish it’s very typical to say,
“I have a question” or “A question” before asking a question, it’s not nearly such a common practice with English speakers.
Very often we just jump straight into the question. Really. Especially with friends. It’s not considered rude.
There are situations however where we want to be more polite or less abrupt. In this case we introduce our question or problem with phrases such as…
“Can I ask you something?”
“I’m confused about something.”
“I don’t understand something.”
“There’s something I’m confused about.”
“I was wondering….”
You can of course say “I have a question” too.
Nevertheless I really recommend learning the other phrases and not always using this one. Your brain, and especially your English teacher will welcome the change !
And remember, we don’t say “I have a doubt”! Did you know that English teachers groan (imperceptibly) every time they hear this!
“Can I ask you something? Why is there no meeting on Friday?”
“I’m confused about something. Why is it “take out” your lenses and not “take off”?
“I don’t understand something. When do I use “must” and when do I use “have to?”
“There’s something I’m confused about. What’s the difference between ‘in time’ and ‘on time'”?
“I was wondering…could we change the presentation to Thursday instead?”