Grammar Point
auxiliary verb
aux-v 
word usually written using kana alone
uk 
Ichidan verb - kureru special class
v1-s 
て呉れるてくれる

to do for one, to take the trouble to do

after the -te form of a verb

Verb て form + くれる

The auxiliary verb くれる is used after the て form of a verb to indicate that someone does something as a favor for the speaker or for someone the speaker identifies with (like a family member). It expresses gratitude or the fact that the action was beneficial to the receiver.

This construction follows a verb in its て form to show that the action was done as a helpful gesture toward the speaker.

My friend bought a book for me.

He taught me Japanese.

The teacher fixed the mistake for me.

Note

くれる is used when the giver is someone else and the receiver is 'me' or someone close to 'me'. It cannot be used when the speaker is the giver. In polite contexts, the humble version くださる is used instead.

Words: 
呉れるくれる
Radicals of radicals