1. -ed after voiceless sounds like /T/: /f, k, p, s, tʃ, dʒ, θ/
looked (t) dressed (t) watched (t)
helped (t) pushed (t) pushed (t)
2. -ed after voiced sounds like /D/: /b, g, ð,dʒ, l, m, n, ŋ, r, , v, z, vowel/
played (d) roamed (d) judged (d)
sobbed (d) filled (d)
3. -ed after /d/ or /t/ sound like /ID/
EXERCISE 1: listen to the examples.
EXERCISE 2: practise and check your answers
EXERCISE 3: further practice. the solutions are in the file.