tch=ch

Core Rule

tch = /tʃ/, identical to ch, typically after a short vowel to lock the vowel sound.

Articulation

Tongue touches the alveolar ridge, brief stop, then releases into frication; mouth slightly open.

Example

snatch /snætʃ/: short a triggers tch at the end.

Pitfalls

Avoid tch after long vowels; don’t reduce it to /ʃ/ or /k/.