TSG is the more for more educated and more linguistic forms of writing such as essays and poems. so teachers would use and prefer use this a way and speaking snd writing to explicitly make ur point. there is a certain usage and rules that are very restrictive and usually makes all the pieces of wiring sound the sound the same. Ive been taught that grammar usually pertains to punctuation and ow Ive learned that it is different but to me grammar has changed as I’ve learned different context and usages of words like talking and text and essays
