~にかわって・~にかわり
Act in place of another person or thing
You’ll be able to say that someone acts, speaks, or serves in place of another person or thing.

疲れた父にかわって、母がキャンピングカーを運転しました。
tsukareta chichi ni kawatte, haha ga kyanpingu kaa o unten shimashita.
What do you think this sentence means?
In place of my tired father, my mother drove the campervan.
On behalf of or replacing someone
~にかわって means “in place of” or “on behalf of.” It says that one person or thing takes another’s role.
母にかわって、今日は私が料理を作ります。
haha ni kawatte, kyou wa watashi ga ryouri o tsukurimasu.
Today I will cook in place of my mother.
最近は、手紙にかわって、メールがよく使われています。
saikin wa, tegami ni kawatte, meeru ga yoku tsukawarete imasu.
These days, email is widely used in place of letters.
Name the person or thing being replaced
Use noun + にかわって before the action done in that person’s or thing’s place. The more formal にかわり is common in announcements and writing.
父にかわり、私がお礼を申し上げます。
chichi ni kawari, watashi ga orei o moushiagemasu.
In place of my father, I would like to offer my thanks.
去年から、古いバスにかわって、電気で走る新しいバスが町の中を走っている。
kyonen kara, furui basu ni kawatte, denki de hashiru atarashii basu ga machi no naka o hashitte iru.
Since last year, new electric buses have been running through town in place of the old ones.
この工場では、人にかわってロボットが重い物を運んでいる。
kono koujou de wa, hito ni kawatte robotto ga omoi mono o hakonde iru.
At this factory, robots carry heavy objects in place of people.
入院している部長にかわって、課長がお客さまとの会議に出席した。
nyuuin shite iru buchou ni kawatte, kachou ga okyakusama to no kaigi ni shusseki shita.
The section chief attended the meeting with the client in place of the department manager, who is in the hospital.
7 more examples in the grammar path — free for a limited time.