Assimilation of place is most clearly observable in final cons | Word of the day 🖋

Assimilation of place is most clearly observable in final consonants with alveolar place of articulation by initial consonant with a place of articulation.

Examples
That" the t is alveolar. In rapid casual speech the t becomes p before bilabial consonants like:
That person: ðap pɜ:sn
That man: ðap mæn
Meat pie: mi:p paɪ

Before a dental consonant, t will change to a dental plosive for phonetic symbol "t"
That thing: ðat θɪŋ
Get those: get ðəʊz
Cut through: kʌt θru

Before a velar consonant, the t will become k, like :
That case: ðæk keɪs
Bright colour: braɪk kʌlə
Quite good: kwaɪk gʊd


Similarly the "d" would become b, d, and g, and accordingly, "n" will become m, n and ŋ like:
Good boy: gʊb bɔɪ
Bad thing: bæd θɪŋ
Card game: kɒɪg geɪm
Green paper: gri:m peɪpə
Fine thought: faɪn θɔ:t
Ten girls: teŋ gɜ:lz


However the other alveolar consonants like "s and z" behave differently and become ʃ and ʒ like:
This shoe: ðɪʃ ʃu:
Those years: ðəʊʒ jɪəz


Assimilation of place is only noticeable in this regressive assimilation of alveolar consonants; not something needs to learn to do

#Phonology
@moalem_zaban