Since it has already been established that we are talking about tomorrow, there is no need to repeat it - so sentence 2 is the more natural. It's true that in the morning can be used to mean 'tomorrow morning', but in the context of your sentence it means 'in the morning of the day we are talking about', that is, tomorrow. repetition - tomorrow morning/in the morning - English Language & Usage ...
The meanings of the sentences are essentially "Are we (going to be) having classes tomorrow?" and "Do we have classes (scheduled for) tomorrow?" Both of your sentences reflect common language. The use of present tense to refer to a future event in this case is understood to be shorthand for this meaning. The phrases " on tomorrow," " on today," and " on yesterday " are commonly heard in the southern region of the United States. They are acceptable in casual speech and other informal contexts, but should not be used in formal contexts such as academic writing.
tomorrow daley, american english - Origins and history of "on tomorrow", "on today ... I think it is a good question. When there is yesterday morning and tomorrow morning, why have an exception for this morning (which means today's morning)? Yes, idiom, but I actually do like idiomatic extensions like these - as long as everybody knows what is meant and no grammar or semantic rules are violated... Yes.
tomorrow daley, "I have a half-day tomorrow" is normal speech. It’s understood, and there’s no need to add “at school” or “at the office.” When I was in school, we had half-day school every Saturday. But "half-day" doesn’t mean exactly half (50%). In your daughter’s case, “half-day school” is 3 hours, while a full day is 8 hours 30 minutes. Similarly, a teacher may take a half-day off ... Is it natural to say "I have a half-day tomorrow" to mean to have ...
