Изучаем English Unit 13. Ex'treme and Ex'tremity.
Suffixes and Word Stress (3)
Unit 13; Part A
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Some words don't change their stress pattern when a suffix is added
to the root word, but do change the pronunciation of the vowel in the
main stressed syllable. Compare:
The following table shows a number of possible vowel changes. The
main stressed syllable and the pronunciation of the vowel in this
syllable are shown:
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Unit 13; Part B
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In some words, as well as a change in the pronunciation of the vowel
in the stressed syllable, there is also a change in the pronunciation
of the consonants) that follow it.
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Unit 13; Part C
In other words like this, there is a change in the pronunciation of
the vowel in the stressed syllable and also the spelling of either this
vowel and/or the consonant(s) that follow it.
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Unit 13; Part D
| Words that do change their stress pattern when a suffix is added
to the root also commonly change their pronunciation in one or more
syllable: pro'nounce - pronunci'ation pre'fer - 'preferable /∂/ /au/ /∂/ /Λ/ /ι//з:/ /e//∂/ There are many words like this, and a great variety of pronunciation changes. |
Exercises
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| Now listen and check your answers. |
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 Look again at the words in exercise 1 with main stress on the same
syllable as their root. Underline the ones which have a different vowel
sound in the main stressed syllable from that in the main stressed
syllable in their root. (Some of these are given in A and В opposite.)Key.D: intervention; consumption; sanity; precision; sincerity S: familiarise; security; maturity; delivery; diversion; Example: intervention (intervention /e/ - inter'vene /i:/) |
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| Now listen again to the words in exercise 1 and check your answers. |
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| Complete each pair of sentences using pairs of words from the box. Key.1 a divide b division 2 a competitive b compete 3 a collision b collide 4 a example b exemplary 5 a national b nation collide-collision compete-competitive divide-division example-exemplary nation-national
 Example:a It costs £10 a year to subscribe to the sports centre. b I've taken out an annual subscription to the magazine. 1 a We'll ___________ the money between us. b Brighton football club was promoted to the frst ___________. 2 a It's diffcult to stay ___________ in business. b He was much faster and I couldn't ___________ with him. 3 a Rod broke his leg in the ___________. b They say the comet is going to ___________ with Saturn. 4 a She set a good ___________ to her younger sister. b Their behaviour was ___________. 5 a The first of May is a ___________ holiday. b Practically the whole ___________ watched the eclipse. |
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Now listen and check your answers. Then read the sentences aloud. |
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| Write the words from the box in the correct column according to the
vowel sound in the main stressed syllable of their root word. There are
three words in each column. Key. 
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Unit 12 Unit 13 Unit 14 |  |