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!

gēng, géng, gěng, gèng

first tune

gēng

to plow 耕 gēng

till the land; cultivate soil 耕田 gēng tián
to plow 耕 gēng	farmland 田 tián

Chinese characters also pronunced gēng

third tune

gěng

upright; worried 耿 gěng

honest and frank 耿直 gěng zhí
upright 耿 gěng	straight; upright 直 zhí

remembering in one's heart; deeply concerned at heart (Chinese idiom) 耿耿於懷 gěng gěng yú huái
worried 耿 gěng	worried 耿 gěng	at; in 於 yú	mind; heart 懷 huái

Chinese characters also pronunced gěng

fourth tune

gèng

further; even more 更 gèng

better; even better 更好 gèng hǎo
further; even more 更 gèng	good 好 hǎo