[General] He have had told you not to do that.

[jasonree123456]

Context:
Arron: Don't use camera flash with baby.
Kid: Ok. (but at the end he was forgotten to switch off the flash and took the picture.)
Kid of the mum: Come on, Jack (the kid's name). He have had told you not to do that.

Is he have had or he had?

 

[Raymott]

There's no such thing as "have had told". "He had told" is wrong in this case.
"He told you not to do that." - Simple past. There's no indication for the past perfect (had told) here.

 

[Matthew Wai]

"He told you not to do that." - Simple past.

May I use the present perfect ── 'He has already told you not to do that'?

he was forgotten to switch off the flash

I would say 'he forgot' instead of 'he was forgotten'.

Not a teacher.

 

[Raymott]

Yes, there are other grammatical errors. I only commented on the one asked about.
No, you'd use 'forgot' with 'took'. "He was forgotten" is wrong here.
You could probably say "He has already told you..."

If the second speaker (Kid) is called Jack, why not just label speaker two as Jack?

 

[emsr2d2]

Context:
Arron: Don't use camera flash with baby.
Kid: Ok. (but at the end he was forgotten to switch off the flash and took the picture.)
Kid of the mum: Come on, Jack (the kid's name). He have had told you not to do that.

Is he have had or he had?

You now know that "he have had" is grammatically incorrect. It looks like you need to study the construction and usage of various past tenses.

Arron: Don't use camera flash on the baby.
Jack: OK. [Sorry, I forgot to switch off the flash before I took the picture.]
Nameless child: Come on, Jack. He already told you not to do that.