as far as i know, in japanese verbs are divided into two groups. One ends in a consonant and one in a vowel.
tor : stemform of toru. mi : stemform of miru.
those ending in a consonant are called godan-verbs, those in a vowel ichidan.
to attach further suffix to an ichidan-verb nothing is required but simply attach the suffix without any further change.
to attach further suffix to a godan-verb one has to attach an a,e,i,o or u before.
tor --Aeiou--> tora --suffix--> toranai. or: tor --aEiou--> tore --suffix--> toreba.
- am i right so for with respect to the grammar?
- is this rule without exceptions?