Student or Learner
I've seen some sentences in which go seems to have the same sense of get...
He's going crazy...
She's shy... She's going red.
I'm going mad...
Josh went angry
my questions are: When should I use go or get? When exactly can I use "go" istead of "get"?
Is it correct? too informal? Does it have the same sense as "turn"?
She's turning red
Thanks in advance!
Be careful with 'mad'. If a person goes mad s/he becomes insane, but a person gets mad s/he gets angry (with a tinge of American-ness - Br Eng doesn't use 'mad' in this sense so often - though we use it in borrowed sporting idioms like 'Don't get mad get even'. Generally - as a first approximation (I haven't thought long and hard about this) - getting is temporary and going is more permanent, and a polysemous word like 'mad' can change meaning to reflect this general tendency.
If you never used a form of to go in the other examples, your English would sound just fine.
I am not a teacher.
In the US, "getting crazy" means something like acting up, behaving outlandishly or exuberantly, displaying energetic enthusiasm. But "He's getting crazier and crazier" means that he's becoming more and more mentally unstable.
"Going crazy" literally means becoming insane, but we can, of course, use "crazy" figuratively. "To go mad" is reserved for rabid dogs, because the fossilized phrase "mad dog" is used for them.
Many Thanks to everyone!