Learning these consonant digraph sounds will improve your reading, pronunciation, and spelling. These letter combinations are very common, but you probably could not guess how to pronounce most of them. It is worth a little study to learn how to pronounce them, and to recognize the most common words they form.
As noted on the ESL Phonics page, which gives common pronunciations for each letter of the alphabet, English spelling can be very strange. Sometimes words keep part of the spelling of the language they came from. Often one sound can be written several ways.
The good news is that there are patterns to English spelling. If you learn the patterns shown on this page, ESL Phonics , Short and Long English Vowels, and English Vowel Digraphs, you should be able to recognize and pronounce most common English words.
Digraphs are letter combinations that make a single sound.
The consonant combinations listed here make sounds different from the individual letter sounds blended together.
CH makes three sounds in English: most commonly /tʃ/: church, child, march.
It also makes /k/ sound in words of Greek origin: character, Christian, chorus, chronological.
Sometimes it has the /ʃ/ (‘sh’) sound in words of French origin like champagne or machine.
GH is pronounced /g/ at the beginning of words
like ghost, and at the end of words is silent (see below) or makes the /f/
sound: cough, enough, laugh, rough, tough.(The last two are pronounced 'ruff' & 'tuff.' See also PH.)
It is silent in bought, caught, daughter, height, high, light, might, right, sigh, sight, though, and thought (etc.).
KN makes the sound of /n/: knee, knew ( prounounced just like 'new'), knife, knight, know (which sounds exactly like 'no'.)
NG makes the /ŋ/ sound: bang, king, long, lung, ring, sing.
PH makes the sound
of /f/: graph, phone, phonics.(The ending sound is exactly the same in graph, half, laugh, and staff.)
QU makes sound of /kw/: quality, question, quick, quiet.
SH makes the /ʃ/ sound: cash, fashion, foolish, rash, shame, shelter, should, show, trash, wash.
See also TION below.
TH makes 2 related sounds: /θ/ (voiceless): anything, author, bath, breath, cloth, health, teeth, nothing, thing,
or /ð/ (voiced): breathe, brother, clothing, father, mother, mouth, southern, teethe, than, that, the, their, them, then, there, these, they, this, those, though, thus, together, weather.
TION-- Not a true digraph, this common word ending (that often converts verbs into nouns) sounds like ‘shun:’ combination, inflammation, information, nation, relationship.
WH makes the sound of /hw/: what, when, where, which, why (or an /h/ sound in who or whole.)