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1. Underline the stems in the following words:

leader, ability, contribution, carrier, compactness, development, altitude, width, mechanics, pessimist, relation, friendship, storage, boredom, quantity

Suffixes of Verbs Суффиксы глаголов What to do?

Суффиксы

Примеры

Перевод

-ate

to generate

генерировать

-ute

to contribute

содействовать

-en

to shorten

укорачивать

-ize

to magnetize

намагничивать

-ify

to simplify

упрощать

2. Which of the given words are nouns, verbs? Why?

practice, wide, wilderness, practise, electrifier, compute, amplitude, electrify, pretence, organize

Suffixes of Adverbs

Суффиксы наречий

How?

Суффиксы

Примеры

Перевод

-ly

mainly

главным образом

-ward(s)

afterward(s)

впоследствии, потом

-wise

clockwise

по часовой стрелке

Suffixes of Adjectives

Суффиксы прилагательных

What kind of?

Суффиксы

Примеры

Перевод

-able/-ible

considerable,

значительный, возможный

-al

possible fundamental

основной

-(an)eous

simultaneous; advantageous

одновременный; благоприятный

-ous

various; dangerous

различный; опасный

-ant/-ent

important, efficient

важный, действенный

-ate

aggregate

общий, совокупный

-que

unique

уникальный

-ic/-ical

basic

основной

-ior

superior

высший, лучший

-ive

positive

положительный

-ful

useful

полезный

-less

useless

бесполезный

-like

humanlike

человечный

-ory

compulsory

обязательный

-y

noisy

шумный

3. Which of the words are adjectives, adverbs? Why?

easily, equal, noisy, numerous, faulty, anticlockwise, eastwards, well, carelessly, powerful, traceable, good, simply, comfortable, useful, northward, dangerous, businesslike, naturally, inferior, bad

4. Distribute the words into four columns.

Model:

what?

what kind of?

what to do?

how?

use

useful

to use

usefully

insulator, failure, fail, addition, additional, overestimate, equal, equalize, equality, equally, different, differ, difference, resist, resistance, resistivity, resistant, commonly, consumer, faulty, impossibility, carelessly, number, numerous, possible, clockwise

5. a) How many parts does each word consist of? What are the stems?

Model: un-doubt-ed-ly

failure, indifferent, uncommonly, unequality, numerously, uselessly, noiseless, advantageous

b) Translate the words and their stems.

6. Form nouns by adding the suffixes -er, -or.

to work, to invent, to compose, to calculate, to operate, to act, to react, to emit, to transmit, to use, to combine

7. Form adverbs from adjectives by adding the suffix -ly:

easy, reasonable, usual, special, physical, functional, real, regular, magnetical, different, logical, mathematical, subsequent, consequent

8. a) Choose the proper suffixes and add them to the stems.

stems: equal-, foil-, add-, differ-, success-, common-, resist-

suffixes: -ure, -ly, -ence, -ition, -ful, -less, -ance, -ness

b) Translate the new words.

9. Form adjectives. Choose the proper suffixes and add them to the stems.

stems: differ, advantage, metal, structure, resist, use, reason, control, base

suffixes: -ous, -ic, -less, -ful, -able, -ent, -ant

10. Translate into Russian in writing:

1. Oxygen combines directly with nearly all elements.

2. Plastic materials are relatively new insulating materials.

3. Polythene cables have numerous advantages.

4. The importance of semiconductors for modem science cannot be underestimated.

5. Semiconductors conduct electricity less efficiently than metals.

6. The method proved to be efficient.

7. What resistance materials are in common use today?

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