How does yendo work ?

Question

When do i use it in place of iendo ? how do I know ?

Answer 1

You use it either for:

A) the verb "ir". "Yendo" is its gerund.

B) -ir and -er verbs that have stems ending in a vowel (i.e., -uir, -eer, -aer, and oír). Some words with these endings are: leer, constuir, fluir, creer, and caer. I'm sure there are plenty more. You could try to memorize it, but I think the more you just practice saying it and its conjugations (particularly, the preterit tense), it'll begin to feel natural. You won't even have to think about it.

leyendo
oyendo
constuyendo
creyendo ...etc

Buena suerte

Answer 2

I Think you use it mainly to preserve pronounciation - Or if you end up with three vowels together which does not really work