Weak and strong forms: how small words change in a sentence
Short answer: Small grammar words such as a, the, to, and, can and of have two forms. In a sentence they are usually weak, with the schwa: a cat /ə kæt/, bread and milk /bɛd ən mɪlk/, I can swim /aɪ kən swɪm/. They are strong only when they are stressed or alone: Yes, I CAN /kæn/. Weak forms give English its rhythm.
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At a glance
| Word | Weak form | Strong form | Example |
|---|---|---|---|
| a | /ə/ | /eɪ/ | a cat |
| the | /ðə/ | /ði/ | the dog |
| to | /tə/ | /tu/ | to school |
| and | /ən/ | /ænd/ | bread and milk |
| can | /kən/ | /kæn/ | I can swim |
| of | /əv/ | /ʌv/ | a cup of tea |
How to make the sound
- Find the content words (nouns, verbs, adjectives). They carry the stress.
- Say the small words quickly and softly with the schwa.
- Use the strong form when you stress the word: Yes, I CAN.
- Say the sentence in rhythm: a CAT, to SCHOOL, bread and MILK.
Examples in sentences
- a cat
a = /ə/: /ə kæt/. - to school
to = /tə/: /tə skul/. - bread and milk
and = /ən/: /bɛd ən mɪlk/. - I can swim.
can = /kən/: /aɪ kən swɪm/. - Yes, I can!
can is strong here: /kæn/. - a cup of tea
of = /əv/: /ə kʌp əv ti/.
Common problems
- Saying every word strongly: I CAN SWIM sounds like a robot. Weaken can: /kən/.
- Using the weak form at the end: Yes, I can. Here can is strong (/kæn/).
- Dropping the small words: The small words are short, but you still need them.
For Vietnamese speakers
- Vietnamese gives each syllable a similar length. In English, small words are reduced, which can make a sentence sound faster.
- Listen to native speech: you hear CAT and MILK clearly, and a and and as soft sounds.
Check yourself
- How is “to” said in “to school”?
Show the answer
/tə/ Weak form.
- When is “can” strong?
Show the answer
When it is stressed or alone. Yes, I CAN.
- Which words are usually weak?
Show the answer
a, the, to, and, of, can. Grammar words.
Questions
Is it wrong to use the strong form?
Not wrong, but it can sound stiff. Use the weak form in normal speech.
Why does English use weak forms?
It keeps a steady rhythm, with stressed words on the beat.
Which words should I stress?
Nouns, main verbs, adjectives and question words.
More lessons in this part
Part of the 👄 Pronunciation tool: Sentence Pronunciation. See also the English pronunciation guide. Đọc bằng tiếng Việt.
Written for English learners by the English for Fun team. How we write our lessons · Last updated 2026-11-05.
Reviewed by Chinh Q. Hoang, PhD, founder, English for Fun · 2026-10-30