Why do we recognise phonostylistic effects carried by intonation irrespective of the speaker?

mary used to eat junk food when she was a child but now she keeps fit and prefers healthy food.

10 years ago people used to pay only in cash, but today most people have credit cards.

seven years ago i used to have a motorbike, but now it belongs to my sister as i drive a car.

when he lived in paris, he used to eat frogs every weekend, but now he lives in india and he eats indian food every second day.

when her granddaughter was a kid she used to believe that snow was made of ice cream.

dasha is taller, then dima

mother is cooking now

you are really played with my sister yestarday

my fatheris very strong

my sister is very short

this girl is very beautiful, but this girl is ugly

oh, you very handsome

this trousers very long

you cat is large? but my cat is thin 

0 zero [‘ziərəu] 1 one [wʌn] 2 two [tu: ] 3 three [θri: ] 4 four [fɔ: ] 5 five [faiv] 6 six [siks] 7 seven [‘sev(ə)n] 8 eight [eit] 9 nine [nain] 10 ten [ten] 11 eleven [i’lev(ə)n

это всё что смогла

have you everbeen indifficult situations?