The following video demonstrates each syllable of the pinyin structure
and the exercise of pinyin/zhuyin with basic Chinese 4-tune pronunciation

Mandarin pinyin tunes
Click the framed calligraphic Chinese symbol icons
to link more related multi-character Chinese words!

kēn, kén, kěn, kèn

third tune

kěn

willing to agree; consent 肯 kěn

affirm; approve sure; definite 肯定 kěn dìng
agree; consent 肯 kěn	certain 定 dìng

gnaw; nibble 啃 kěn

earnest; sincere 懇 kěn

sincere true-hearted; wholehearted 誠懇 chéng kěn
sincere; honest 誠 chéng	sincere 懇 kěn

cultivate land; reclaim wasteland 墾 kěn

open new land for farming clear a wild area for cultivation 開墾 kāi kěn
open 開 kāi	cultivate land 墾 kěn