systematic

system

to study / to learn

the Japanese language

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

a target, a mark, a bullseye / an objective, an object (of doing something)

as far as ... is concerned; in terms of ...

Japanese-language education for non-native speakers