Second Group
Irregular Past Tense formation
Verbs ending in чь
Some types of verbs have no л in the Masculine Past. There are mainly the oldest verbs of the Russian language which have no consonant stem.
No л is added to this stem in the Masculine Past.
In addition to that the stem consonant is very often replaced by its intercharging pair consonant: ч by г, ч by к, etc.
Let us take for example the verb мочь – to be able to, ч will be replaced by г. So, the Past Tense forms are:
Singular
M. я, он, ты мог
F. я, она, ты могла
N. это, оно могло
Plural & Polite
мы, вы они могли
Some other verbs of the same type of the Past Tense formation:
помочь - to help
он помог - he helped
она помогла - she helped
оно помогло - it helped
они помогли - they helped
ч/г interchange
Irregular Past Tense formation
Verbs ending in чь
Some types of verbs have no л in the Masculine Past. There are mainly the oldest verbs of the Russian language which have no consonant stem.
No л is added to this stem in the Masculine Past.
In addition to that the stem consonant is very often replaced by its intercharging pair consonant: ч by г, ч by к, etc.
Let us take for example the verb мочь – to be able to, ч will be replaced by г. So, the Past Tense forms are:
Singular
M. я, он, ты мог
F. я, она, ты могла
N. это, оно могло
Plural & Polite
мы, вы они могли
Some other verbs of the same type of the Past Tense formation:
помочь - to help
он помог - he helped
она помогла - she helped
оно помогло - it helped
они помогли - they helped
ч/г interchange