Students are often confused by isteach and istigh.
Use isteach when there is movement involved:
chuaigh mé isteach - - I went in;
Use istigh when the state of being within is intended:
d'fhan mé istigh - - I remained inside / within.
If there is no emphasis on "movement into" or "being inside"
do not use isteach or istigh but the preposition i - - in.
(Remember i may appear as i, sa, san, or sna
depending on the meaning and the word following.
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