1. leaf - leaves, mouse - mice, sheep - sheep, piano - pianos, child - children, country - countries, goose - geese, lady - ladies, man - men, tooth - teeth, woman - women, gooseberry - gooseberries, crisis - crises, medium - media, deer - deer, knowledge - нет формы множ. числа, fish - fishes (только если речь о биол. видах), dish - dishes, news - всегда только ед. ч., wife - wives, hero - heroes, glass - glasses (стаканы) , wolf - wolves
2. Read the following nouns first in the singular and then in the plural:
1. bag - bags, dog - dogs, bird - birds, verb - verbs, pan - pans, hen - hens, spoon - spoons, noun - nouns, room - rooms, ring - rings, thing - things, evening - evenings, song - songs, girl - girls, apple - apples, table - tables, article - articles (*окончание -s формы множ. числа всех сущ. в этом пункте читается как /z/, так как слова оканчиваются на звонкие согласные);
2. tree - trees, pie - pies, cow - cows, fly - flies, lady - ladies, baby - babies, teacher - teachers, letter - letters, mirror - mirrors, berry - berries, play - plays, toy - toys, city - cities (*окончание -s формы множ. числа всех сущ. в этом пункте читается как /z/, так как слова оканчиваются на гласные);
3. cake -cakes, snake - snakes, fork - forks, map - maps, lamp - lamps, hat - hats, clock - clocks, rat - rats, coat - cats, goat - goats, skirt - skirts, shirt - shirts, plant - plants, jacket - jackets, object - objects, attribute - attributes (*окончание -s формы множ. числа всех сущ. в этом пункте читается как /s/, так как слова оканчиваются на глухие согласные);
4. shelf - shelves, leaf - leaves, knife - knives, wife - wives, roof - roofs, chief - chiefs, handkerchief - handkerchieves;
5. bus - buses, class - classes, glass - galsses, dress - dresses, piece - pieces, slice - slices, horse - horses, house - houses, rose - roses, nose - noses, blouse - blouses, box - boxes, fox - foxes, match - matches, bench - benches, bridge - bridges, cage - cages, cottage - cottages, bush - bushes (*окончание -es формы множ. числа всех сущ. в этом пункте читается как /iz/);
6. man - men, woman - women, child - children, foot - feet, tooth - teeth, goose - geese, mouse - mice, ox - oxen, fish - fish, trout - trout, fruit - fruit, swine - swines (только если свиньями называют людей с соответствующим поведением), mouse - mice, louse - lice, deer - deer, sheep - sheep;
7. phenomenon - phenomena, crisis - crises, stimulus - stimuli, formula - formulae/formulas, axis - axes, thesis - theses, criterion - criteria.
3. Give the plural form of the words underlined. Pattern: I met a man at the meeting last night. I met some men at the meeting last night.
1. I saw a mouse running across the floor. - I saw some mice running across the floor.
2. The baby got a new tooth. - The baby got some new teeth.
3. I need a match. - I need some matches.
4. He cooked a potato for dinner. - He cooked some potatoes for dinner.
5. The professor is reading a thesis. - The professor is reading some theses.
6. I visited a city in the Ukraine. - I visited some cities in the Ukraine.
7. She photographed a leaf. - She photographed some leaves.
8. I caught a fish. - I caught some fish.
9. I saw a sheep in the farmyard. - I saw some sheep in the farmyard.
10. She talked to a child.- She talked to some children.
11. The children hid behind the bush. - The children hid behind the bushes.
12. In science class we studied about a species of fish. - In science class we studied about some species of fish.
13. When I was in the park yesterday, I saw a goose. - When I was in the park yesterday, I saw some geese.
14. When we spoke in the cave, we heard an echo. - When we spoke in the cave, we heard some echoes.
15. He packed a box. - He packes some boxes.
16. Every day I read in the newspaper about a new crisis in the world. - Every day I read in the newspaper about new crises in the world.
17. The wagon is being pulled by an ox. - The wagon is being pulled by some oxen.
18. I told the children a fable about a wolf and a fox. - I told the children a fable about wolves and foxes.
19. We read a story about an Indian chief. - We read a story about some Indian chiefs.
20. At the meeting last night, we were listening to a speech. - At the meeting last night, we were listening to some speeches.
21. In science class, we studied a phenomenon of nature. - In science class, we studied some phenomena of nature.