relaxed pronunciation in writing?

The OP's profile says "Spain," but as the OP hasn't posted for three years, he/she might have moved.

I'd only use "gonna" or "wanna" in writing that was deliberately extremely informal, for instance, writing an email to a friend that "I gotta go to work tomorrow but I sure don't wanna."

I did some looking at ESL websites. Some encourage teachers to teach gonna, wanna, et al. because students need to be able to understand them in spoken speech. But I didn't see anything about teaching the reductions in writing. (The term for these kinds of pronunciations seems to be "reductions.")

Thank you all for your replies!

Yes, I'm still in Spain, so the "here" I mentioned is Spain. I've only see two students (only one of them is in my class this year) do it, so I can't say that it is taught throughout Spain. The student used it only in a specific task - when writing a letter/e-mail to a friend -, so I feel I can't say it's wrong, since it is normally used by native speakers. I will remind her, though, that it should not be used in other contexts!

Be sure to let the student know that it is also informal in speech. You say to your friend "I'm gonna go to the cafe for lunch. You wanna come?" But the President of the US does not tell Congress in his annual address that "I'm gonna tell you what we shoudlda done last year and what we wanna do this year."

But the President of the US does not tell Congress in his annual address that "I'm gonna tell you what we shoudlda done last year and what we wanna do this year."

You might be surprised at how many gonnas+ and +wannas you hear from even among the best educated and those in very high places.

When I tutored English to immigrants, I urged my students to watch programs such as the PBS News Hour so that they could hear the language as spoken by educated Americans. I watched the program so that we could discuss it when we met, and I was surprised to hear gonna+, +wanna+, +hafta, etc., from many of the regulars on that program. I'm 99% sure that I've also heard them in President Obama's speech.

The only exceptions I can think of is the English spoken by the Queen of England (possibly)

Actually, I can quite imagine it (her using gonna and wanna).

I'm 99% sure that I've also heard them in President Obama's speech.

And Obama is justly noted for the clarity and precision of his speech. The previous occupant of the White House? Not so much...

Nutrax referenced Obama speaking to Congress in his annual address. I think she's right. Same with the Queen's speech from the throne, or her Christmas message.

I have no proof, but I wouldn't be surprised to hear some wannas and couldas in a President's annual address to the Congress.

A few years ago I attended a lecture by a Dutch linguist, who asked the audience a similar question about a few similar elision-type things that are OK in Dutch informal speech but are thought of as very informal: "would the Queen ever use them?" he asked in a poll of the audience. "Of course not" was the audience's resounding response. Then he played a few tapes, making it clear that the Queen did just that.

Apparently it is very hard to read a written-out speech, no matter how formal, all the way through without lapsing into a few careless informal pronunciations.

i don't usually listen to the State of the Union address but maybe I'll make an exception this year.

What about the pronunciation of these words, "gonna" "wanna" and so on?

Written the way they are, the "gonna" (and so on) is going to sound American, whereas the slang "going to" in places such as Australia or England might rather be "go-na" (where the "go" is pronounced "go")...

The shortening of these expressions will inevitably happen in English, but not necessarily in the same way....this is where the written and spoken English might also diverge?