How are し, ち, and じ pronounced differently than in English?


I know that sh, ch, and j are pronounced differently in Chinese than in
English, but what about Japanese? I have read that し, ち, じ are pronounced
slightly differently than they would be in English (she, chea[p], gee),
however I'm never told how. If they (し, ち, じ) are pronounced differently than
they would be generally pronounced in English, how?




With the English sounds sh, j and ch, the friction occurs between the alveolar
ridge (where the flat part of the mouth located behind the teeth sharply moves
up to the palate) and the tip of the tongue. Sometimes, the tongue is a bit
further back or curled, and the back part of the tip of the tongue is involved
(ie. it is retroflex).

In Japanese, the tip of the tongue is not used for these sounds; instead, a
more posterior and wider part of the tongue is used at the point of friction,
the tip of the tongue being more or less at the intersection of the bottom
teeth and the gum, but without pressing against them.




With the English sounds sh, j and ch, the friction occurs between the alveolar
ridge (where the flat part of the mouth located behind the teeth sharply moves
up to the palate) and the tip of the tongue. Sometimes, the tongue is a bit
further back or curled, and the back part of the tip of the tongue is involved
(ie. it is retroflex).

In Japanese, the tip of the tongue is not used for these sounds; instead, a
more posterior and wider part of the tongue is used at the point of friction,
the tip of the tongue being more or less at the intersection of the bottom
teeth and the gum, but without pressing against them.

