Answer:
You'd like tea <u>don't</u><u> </u><u>you</u>?
Sabbhya'd already finished her homework, <u>didn't</u><u> </u><u>she</u>?
Okay, so I'm thinking that the answer is semantics, because syntax is the arrangement of words, learning acquisition is just the structure(I think), and grammar is the structure of language.
Hope that helped!