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
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to link more related multi-character Chinese words!

sī, sí, sǐ, sì

first tune

sī

silk 絲 sī

think; thought 思 sī

private; personal 私 sī

selfish 自私 zì sī
self 自 zì	personal 私 sī

rip; tear off 撕 sī

Chinese characters also pronunced sī

third tune

sǐ

dead; death; to die 死 sǐ

fourth tune

sì

four; number 4 四 sì

temple; Buddhist temple 寺 sì

alike; similar 似 sì

feed (animal) 飼 sì

fodder; forage pet food; feeding stuffs 飼料 sì liào
feed 飼 sì	material 料 liào

Chinese characters also pronunced sì