write + (and…) + do for someone
kaite ageru
do (something) for someone
meaning: write for them
駅まで傘、貸してあげるよ。
eki made kasa, kashite ageru yo.
I'll lend you my umbrella as far as the station. casual
甥っ子たちに会うと、絵本を読んであげる。
oikkotachi ni au to, ehon o yonde ageru.
Whenever I see my nephews, I read a picture book for them. neutral