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* note - You should be familiar with the terms Voiced and Voiceless before learning this lesson.

 If –ed is preceded by a d (voiced) or t (voiceless) sound, then pronounce a voiced id
(also known as schwa d). * This is also the exception to the other rules below.

* note - adding ed to these words makes the past tense verb have an extra syllable. ex. chat = 1 syllable   chatted = 2 syllables.

chat     chatted

wade     waded 

add     added 

need     needed 

wait     waited 

want     wanted 

rent     rented 

recommend     recommended
 

If –ed is preceded by a voiceless consonant sound like ch, f, h, k, p, s, sh, th (as in thing) , the –ed sounds like a voiceless t. Remember that the e is silent.

note: voiceless t is not listed because it is an exception to this rule (see above).

note: adding ed to these verbs does not change the number of syllables. ex. walk = 1    walked = 1

walk   walked 
pass     passed 
kiss     kissed 
laugh     laughed 
stop     stopped
look     looked 
bake     baked 
fish     fished