Question

日本語が上手に成る迄、国に帰りません。 日[に]本[ほん]語[ご]が 上[じょう]手[ず]に 成[な]る 迄[まで]、 国[くに]に 帰[かえ]りません。(in "A 迄[まで]B" A describes the change coinciding with or causing B; A is usually a verb of the "change" kind, always in present tense affirmative)

Accepted Answer

I will not go back to my country, till I become fluent in Japanese.

Expression	日本語が上手に成る迄、国に帰りません。
Meaning	I will not go back to my country, till I become fluent in Japanese.
Reading	日[に]本[ほん]語[ご]が上[じょう]手[ず]に成[な]る迄[まで]、国[くに]に帰[かえ]りません。 (in "A 迄[まで]B" A describes the change coinciding with or causing B; A is usually a verb of the "change" kind, always in present tense affirmative)

I 日本語が上手に成る迄、国に帰りません Back Country Till Fluent Japanese 日[に]本[ほん]語[ご]が