Pronounce the letter "t": near "a", "o", or "u", with its broad sound. For this, place the tongue so that it lies along or close to the hard part of the roof of the mouth behind the upper front teeth, with the tongue tip touching the back of the upper front teeth. Make sure that the tongue is relaxed and spread out, not contracted and pointed. Pronounce the "t", practicing on:
Pronounce a broad "t" inside or at the end of a word in the same way: giota (GI-tuh), eachtra (AHK*-truh), leat (lat), bocht (bohk*t).
Pronounce a "t" near an "e" or "i" with the tongue tip against the hard ridge behind the upper front teeth. Let the tip slide forward and down as you pronounce the sound, which will have a faint (y) sound at the end of it. Examples of this slender sound: te, tirim (TIR-im), tír (teer), teip (tep), teach (tahk*), téamh (tay*v), tiús (tyoos), trí(tree), triúr (troor).
Inside or at the end of a word, slender "t" has the same sound: litir, feictear (FEK-tyuhr), geit (get),áit (aw*t).
Sometimes the slender "t" may resemble the English (ch) sound, but do not consciously imitate the (ch) sound. To see this, pronounce "áit" as (aw*) and (t), with a faint (i) sound in between. Then pronounce it (oy) and (ch), and you will hear the difference.