ば-Form CLAUSE1 + CLAUSE2 as “If CLAUSE1, CLAUSE2”
The ば-Form is one of various ways to express a conditional statement; it can be used with verbs, adjectives, and nouns. This grammar construct cannot be used when the verb in CLAUSE1 indicates an action or event and the verb in CLAUSE2 is to represent a command, request or suggestion; the other conditional construction, たら-Form, should be used instead. However, if the verb in CLAUSE1 indicates a state of being and the verb in CLAUSE2 is to represent a command, request or suggestion, this ば-Form grammar pattern can be freely used.
There are no restrictions when using adjectives and nouns with this ば-Form grammar pattern because all adjectives and nouns are states of being. However, for な-Adjectives and Nouns, this grammar pattern is seldom used in informal conversations and is usually substituted with the alternative conditional construction, なら.
The word もし, which itself translates to “if,” can be used with this grammar construct.
Yoku benkyou sureba manten o toreru.
(If I study hard, I’ll be able to get a perfect score.)
Konya jikan ga areba game shiyou to omou.
(If I have time tonight, I think I will play some games.)
Takakereba tomodachi ni okane o kariru koto ga dekiru.
(If it’s expensive, I can borrow some money from my friend.)
Hima de areba issho ni benkyou shimasenka?
(If you’re free, would you like to study together?)
Doyoubi de areba iku koto ga dekiru.
(If it’s Saturday, I can go.)