ConceptCONCEPTMind Your Future
Part Two · Building accuracy · Level B1

Unit 23
The -s ending

/s/ /z/ /ɪz/
Worksheet W23
From your coach. The ending that marks plurals and verbs. Three sounds, picked by the sound just before them.
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These are the symbols you will see in a dictionary. Click any one to hear it. You do not need to memorize them.

Why this mattersThe same rule, one unit later

Same shape of problem as the last unit. Books, dogs, buses. One spelling, three pronunciations, and one of them adds a syllable.

This ending appears on plurals, on third-person verbs and on possessives, so you produce it constantly. And because -s often lands in a consonant group, it is a common place to lose a grammatical ending entirely.

One spelling, three sounds, and the z is by far the most common.

What your language doesWatch for dropping, not just substituting

If your language does not allow final consonant groups, you will either add a vowel, books becoming bookis, or drop the s, losing the plural.

If your language has s but not z at the end of words, you will use s everywhere. This is less serious than the other two, because it rarely confuses anyone, but it is audible.

Spanish speakers in particular may weaken or drop final s, since many varieties do this natively.

Common trap

The bigger risk is not substituting but dropping the s and losing the plural. Spanish speakers especially weaken a final s.

How to make itThe ending copies its neighbor, again

Exactly the same logic as the last unit, and saying so out loud helps.

If the word ends in an s-like sound, s, z, sh, ch, j or x, add a syllable. Buses, watches, changes, prices.

If the word ends in any other voiceless sound, p, t, k, f or th, the ending is an s. Books, cats, stops, months.

If the word ends in any other voiced sound, the ending is a z. Dogs, plays, rivers, needs.

Throat test again. Buzz before the ending means z. And note that the z ending is the most common one by a wide margin, because most English sounds are voiced. If you are using s everywhere, you are wrong most of the time.

Then check for dropped endings specifically. Record a sentence and confirm every plural is actually there. That is where the ending most often disappears.

Try this now

Throat test again: a buzz before the ending means z. Then record a sentence and confirm every plural is actually there.

Side view of the mouth, showing how the sound is made

Say itWord banks

S ending, one beat

Z ending, one beat

Extra syllable

In a sentencePut it under pressure

Record and compareSee the shape of your voice

Pick anything above, then record yourself saying it. Your recording appears in red over the model in gray. You are comparing shapes, not chasing a score.

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Check yourself

Units 26 and 27 have the same rule. What is it?

The ending copies its neighbor. A voiced sound before it means a voiced ending, voiceless means voiceless. And if the ending is too similar to the sound before it, a whole syllable appears to keep them apart.