How to pronounce verbs ending with ''-ed ''

The English verb ending -ed is a curious construction.
The suffix -ed is the sign of the past tense. That is, most English verbs form their past tenses by adding -ed. For example, walk/walked, love/loved, sneeze/sneezed. The same ending marks the simple past tense and the perfect: Yesterday I walked. I have walked for hours.
In earlier periods, English verbs presented more variety in the way they formed the simple past and the past participle. A few of the older forms survive in what the grammar books call “irregular” verbs. These verbs do not form their past tenses by adding -ed:
sing sang (have) sung
give gave (have) given
write wrote (have) written
These “irregular” verbs are sometimes called “strong” verbs. Once very numerous in English, only a few survive–fewer than 70. Many of them, like help, became -ed verbs long ago so we no longer say holp or holpen. Some of the survivors, like wake and dive, are in the process of changing and the old and new forms are both in use:
He woke the baby. or He waked the baby.
He dove from the top board. or He dived into the pool.

You may have noticed that in English, past tense verbs with an -ed ending are pronounced in three different ways: 

• [t]
• [d] or 
• [Id].

For example, if I say the past tense verb “walked“, as in, “I walked away,” what is the last sound that you hear in the verb?

• “Walked” [wakt]

1) The -ed verb ending sounds like a [t], “Walked” [wakt], even though it ends in the letter “d”.

What do you hear when I say:

• “smelled“, as in, “it smelled bad.”

2) The -ed verb ending sounds like a [d]: “smelled” [smeld]

And when I say, “visited”, as in “I visited New York City”, how did I pronounce  that “-ed” ending?

• [Id] [vizitid].

3) The -ed verb ending sounds like [ɪd], [vizitid].

So, Here I give the three rules that explain the differences in past tense verb ‘-ed’ pronunciation. But don’t be surprised if most Americans can’t explain these rules to you! The truth is, Americans make these changes in sound without even noticing. Rules presented here are only for non native speakers, as they learn english as a second language. To clarify this point, ask yourself  How many rules have you learnt to be proficient in your mothertongue ? The answer is obvious , No rule. Why ? because, you are surrounded by the speakers of your own language. But being physically present in an area where you are not getting the environment, in which you can surround yourself with native speakers, you must know the key rules to be efficient speaker. So, Here we go .

Intro | Why the Sound Changes

Place your fingertips on the front of your neck, and pronounce the following words. What do you feel on your fingers when you say the underlined sound?

• vow | fake (vvv | fff)
• zebra | snake (zzz | sss)

– When we pronounce voiced sounds, our vocal chords vibrate when we say those sounds. [v] [z]. Did you feel the vibration? 

– When we pronounce voiceless sounds, our vocal chords do not vibrate. [f] [s]. No vibration. 

This vibration or lack of vibration then carries forward to the following sound in the word. Therefore, this vibration or lack of vibration explains why we pronounce the past tense of verbs in three voiced or voiceless ways: [t], [d] or [Id].

1) [t] final sound

Verbs ending in voiceless sounds [p, k, θ, f, s, ʃ, tʃ] cause the “-ed” ending to be pronounced as the voiceless [t] (with no vocal chord vibration).

•  [p] “He popped a balloon.” [papt]
• [k] “They talked a lot” [takt]
• [θ] “th”: “She frothed a cup of milk” [frawθt]
• [f] “I laughed at the movie.” [læft]
• [s] “She kissed a frog.” [kIst]
• [ʃ] “sh”: “We brushed it off.” [bruʃt]
• [tʃ] “ch”: “I reached around for it.” [riytʃt]

2) [d] final sound

Verbs ending in the voiced sounds [b, g, ð, v, z, ʒ, dʒ, m, n, ŋ, r, l] cause the “-ed” ending to be pronounced as a voiced [d].

•  [b] “It bobbed up and down.” [babd]
• [g] “He begged her to stay.” [bɛgd]
• [ð] “She breathed loudly.” [briyðd]
• [v] “They loved it.” [luvd]
• [z] “We raised her expectations.” [reyzd]
• [dʒ] “They bridged the gap.” [brIdʒd]
• [m] “I claimed it was mine.” [kleymd]
• [n] “They banned new members.” [bænd]
• [ŋ] “She banged into the chair.” [bæŋd]
• [r] “He cleared it up.” [kliyrd]
• [l] “I rolled up the paper.” [rowld]

3) [əd] or [ɪd] final sound

Verbs ending in the sounds [t] or [d] will cause the “-ed” ending of a verb to be pronounced as the syllable [əd] or [ɪd].

•  [t] “I visited the Empire State Building.” [vɪzɪtəd]
• [t] “She edited the research paper.” [ɛdɪtɪd]
• [d] “We ended the game early.” [ɛndɪd]
• [d] “He breaded the chicken.” [brɛdɪd]

Why are these rules important?

Connected Speech [c+v]

These “-ed” pronunciation rules are particularly important, because in English we connect [ see more about word connection] our speech when we have a word that:

• ends in a consonant; and
• is followed by a word that begins with a vowel.

In this case, the way you say the verb’s “-ed” ending will be heard loudly and clearly.

Example

• “He walked away”  [walkt] –> “He walk taway” [hiy WAWK təWEY]

Did you hear that [t] in “walked” clearly?  

H-Deletion

The same rule of connected speech [c+v] occurs when h-deletion causes us to delete the “h” sound at the beginning of a word.

Example

• “We raised her expectations” [reyzd] –> ”We raizd her expectations” –> “We raizdər expectations”

We deleted the “h” in “her”, then connected the speech from “raised” and “her”, which became “raisder”.