write + (and…) + change onward from now
kaite iku
change onward from now; do and go
meaning: go on writing
秋になると、日がどんどん短くなっていく。
aki ni naru to, hi ga dondon mijikaku natte iku.
When autumn comes, the days steadily go on getting shorter. neutral
傘、持ってった方がいいよ。
kasa, mottetta hou ga ii yo.
You'd better take an umbrella. casual