Hi Anon
You're opening a big can of worms here. This website is global and, as such, is not a Standard English devoted site. In fact, most of the users of this site seem to use American English. As an English teacher, born in England and working from England, I can find this peculiar. Some people take great offense when I give an alternative answer based on Standard English.
With regard to spoken grammar, as known to the Oxford folk, it can be very difficult to teach. The first reason for this is that many people learn English in order to obtain a qualification at the end of the course. As suc, these people are taught the formal forms, which are standardised. The examiners expect a certain response and teachers have to teach this response for their pupils to succeed. The second reason is the great variety in spoken English. Although the UK is a very small country with a moderate sized population, the local variences in dialect, phraseology and grammar are massive.
For example, I was born and raised in Lancashire, where we use the phrase 'Put th'wood inth' ole' which is the dialectic way of saying 'Put the wood in the hole' or more simply - 'close the door'. Nowhere else in the UK would nyone say this, or even understand it. Likewise, in Newcastle, the Geordies (as they are known) might say 'Howay, that's canny lush, man' which means 'that's wonderful/lovely'. Newcastle is only 70 miles from Lancashire, yet such a different English is spoken. With this sort of variety in the UK, imagine how much variety there must be across the USA, and Canada, and Australia/New Zealand etc.
Overall, for most English learners, this would be very confusing and could damage their English learning. This type of English study is best learnt by experience, rather than study, and is probably only for very advanced students. I note that your English is superb, so you would be suitable for such learning. As you are, no doubt, aware, I have witten this response in 'pure' English, which would be understood by English (whether Standard or American) across the world. However, just for you, here is a little more conversational style, as you might hear in Manchester.
"Ye, what's doing? Are we sorted for Saturdays match, like? Should be reet gradely!"
And with that, I'm off to Rochdale for our last game of the football season. We'll be in the play-offs and hopefully a trip to Wembley and promotion.
Good luck, and you might like to watch some regionally based movies (Trainspotting, Twin Town, Billy Liar) to hear more spoken grammar.