English pronunciation for Spanish speakers: the highest-impact sound contrasts

English pronunciation improves faster when you work on contrasts that can change one word into another. For a Spanish speaker, ship and sheep may initially sound like two versions of the same vowel. An English listener hears two different words.

Spanish has a five-vowel system, while English divides the vowel space into more categories. Research with Spanish first-language learners repeatedly identifies difficulty with English contrasts such as /iː/–/ɪ/, /uː/–/ʊ/, and /æ/–/ʌ/. (Study of English vowel production by Spanish L1 learners)

A recent study of 60 advanced Spanish-speaking learners examined vowels, /v/, /z/, consonant clusters, and past-tense endings in relation to how listeners understood their English. The list below draws from those recurring areas, but it is a starting set rather than a universal ranking. Your recordings decide which contrast comes first. (Study of segmental accuracy in Spanish-accented English)

The aim here is clear speech, not removal of a Spanish accent. Start with the contrasts that change frequent words and show up repeatedly in your own recordings.

1. /iː/ and /ɪ/: sheep or ship?

Test these pairs:

sheep / ship
leave / live
seat / sit

For /iː/ in sheep, the tongue is high and forward and the lips may spread slightly. For /ɪ/ in ship, lower and relax the tongue a little. Length can support the contrast, but tongue position does more of the work; simply holding ship longer does not reliably turn it into sheep.

Use a listening check before recording. Play one word from a shuffled pair and point to what you heard. If perception is uncertain, production will be hard to stabilize.

Then record this sentence:

I live near the sheep farm.

If live drifts toward leave, return to the pair before repeating the sentence.

2. /æ/ and /ʌ/: cap or cup?

Test:

cap / cup
bad / bud
ran / run

English /æ/ in cap uses a low, forward tongue position with the jaw open. /ʌ/ in cup is more central and usually more relaxed. Spanish listeners may map both sounds toward the available /a/ category, so the two English words can converge.

QwikSpeak’s language-interference data specifically treats English /æ/ as a common difficulty for Spanish speakers, often pulled toward /e/ or /a/. That makes /æ/ a sensible early diagnostic rather than proof that every Spanish speaker has the same problem.

Record each pair in alternating order: cap, cup, cap, cup. A random order is even better because it prevents your mouth from settling into a memorized rhythm. Move to short phrases only after the two vowels remain distinct:

a black cap
a black cup

3. /b/ and /v/: berry or very?

Spanish spelling uses both b and v, but standard Spanish does not use them as the English /b/–/v/ phoneme contrast. In English, the mouth movements are visibly different.

• /b/: close both lips, build pressure, then release: berry.
• /v/: touch the upper teeth lightly to the lower lip and keep the voice and air moving: very.

Test:

ban / van
boat / vote
berry / very

Hold /v/ for half a second during the first practice round: vvvvvery. That is a temporary training aid. Return to normal timing when the lip-and-teeth contact is reliable.

4. /s/ and /z/: ice or eyes?

English /s/ and /z/ share nearly the same tongue position. The difference is voicing. Touch your throat while saying ssss and zzzz. You should feel vibration only on /z/.

Test:

sip / zip
bus / buzz
ice / eyes

Word endings deserve attention because spelling can hide the contrast. The plural ending in dogs is voiced /z/; the ending in cats is voiceless /s/. If every final s stays voiceless, several grammatical endings become harder to hear.

Record:

The dogs chase the cats.

Check the vibration on dogs and the absence of it on cats.

5. English th: thin, then, tin, or sin?

English commonly uses two dental fricatives:

• /θ/ without voice in thin;
• /ð/ with voice in then.

Place the tongue tip lightly between the teeth and let air pass. Add vocal-fold vibration for /ð/. Do not bite the tongue or force it far outside the mouth.

Depending on a speaker’s Spanish variety and learning history, /θ/ may be replaced by /t/, /s/, or /f/. Test the substitutions that occur in your own speech:

thin / tin / sin
three / tree
then / den

Some Spanish varieties use a sound related to /θ/, while most Latin American varieties use /s/ where European Spanish spelling has soft c or z. Treat your own language background as data instead of assuming one exercise fits every Spanish speaker.

One cluster that deserves its own test

Initial /s/ plus a consonant is not a single sound contrast, but it changes many common English words. Spanish phonotactics often favor an initial vowel before combinations such as sp- and st-, which can produce eschool for school or estop for stop.

Test:

school · speak · stop · study

Start with a long /s/ and attach the next consonant without inserting a vowel: sssschool. Shorten the /s/ over several repetitions. Record the words inside phrases so that the cluster does not get an artificial pause:

after school
please stop

A 10-minute diagnostic

Use this once a week rather than drilling every item daily.

1. Choose one pair from each section.
2. Listen to the reference, wait ten seconds, and record both words.
3. Repeat each pair three times in random order.
4. Mark a contrast only when the two words collapse more than once.
5. Select the weakest contrast and practise its mouth movement for four minutes.
6. Retest with two words you did not use in the first round.
7. Finish with one sentence containing both sounds.

If ship/sheep is stable but cap/cup repeatedly collapses, spend the week on /æ/–/ʌ/. A generic “practise English vowels” assignment would waste time on a contrast you already control.

Automatic scores need the same restraint. A low result can come from the target sound, the recording, or another part of the word. Use three attempts and several words before naming the pattern. QwikSpeak lets you choose an English phoneme, hear an example, record the target word, and track repeated attempts. The checker narrows the list; the coach is where you work on the sound that stays weak.

Check your English sound contrasts in QwikSpeak →

Keep any contrast that changes words on the weekly list. Once listeners and recordings consistently preserve it in short sentences, replace it with the next unstable sound.