Exercises and Examples | English Grammar Tutorial - Plural Formation and Exceptions

1 cat → cats

2 dog → dogs

3 book → books

4 pen → pens

5 chair → chairs

1 bus → buses

2 box → boxes

3 dish → dishes

4 watch → watches

5 fox → foxes

1 baby → babies

2 city → cities

3 party → parties

4 country → countries

5 lady → ladies

1 boy → boys

2 toy → toys

3 key → keys

4 day → days

5 monkey → monkeys

1 leaf → leaves

2 knife → knives

3 wife → wives

4 life → lives

5 thief → thieves

1 roof → roofs

2 chief → chiefs

3 cliff → cliffs

4 proof → proofs

5 belief → beliefs

1 tomato → tomatoes

2 potato → potatoes

3 hero → heroes

4 echo → echoes

5 volcano → volcanoes

1 piano → pianos

2 photo → photos

3 radio → radios

4 zoo → zoos

5 studio → studios

1 man → men

2 woman → women

3 foot → feet

4 tooth → teeth

5 mouse → mice

1 sheep → sheep

2 deer → deer

3 fish → fish

4 species → species

5 aircraft → aircraft

1 book → books (regular -s)

2 city → cities (y-to-ies)

3 knife → knives (f-to-ves)

4 tomato → tomatoes (o-to-es)

5 mouse → mice (irregular)

6 sheep → sheep (unchanged)

1 I have many books on my shelf.

2 The cities in this region are growing rapidly.

3 The knives are in the drawer.

4 These tomatoes are fresh.

5 The mice are hiding in the walls.

1 mother-in-law → mothers-in-law

2 passerby → passersby

3 commander in chief → commanders in chief

4 tennis shoe → tennis shoes

5 man of war → men of war

1 criterion → criteria

2 phenomenon → phenomena

3 analysis → analyses

4 thesis → theses

5 crisis → crises

1 ❌ "childs" → ✅ "children"

2 ❌ "knifes" → ✅ "knives"

3 ❌ "mouses" → ✅ "mice"

4 ❌ "sheeps" → ✅ "sheep"

5 ❌ "citys" → ✅ "cities"

1 "I saw many sheeps in the field." → "sheep"

2 "The childs are playing." → "children"

3 "These knifes are sharp." → "knives"

4 "Many mouses live here." → "mice"

5 "The citys are crowded." → "cities"

1 Write a sentence using a regular plural: "The books are on the shelf."

2 Write a sentence using a y-to-ies plural: "The cities are growing."

3 Write a sentence using an irregular plural: "The children are playing."

4 Write a sentence using an unchanged plural: "The sheep are grazing."

5 Write a sentence using a f-to-ves plural: "The knives are sharp."

• Regular -s: Most nouns add -s (cat → cats)
• Regular -es: Add -es to nouns ending in s, ss, sh, ch, x, z (bus → buses)
• Y-to-ies: Consonant + y → ies (city → cities)
• Vowel + y → s: boy → boys
• F-to-ves: Some -f nouns change to -ves (leaf → leaves)
• O-to-es: Some -o nouns add -es (tomato → tomatoes)
• Irregular: Many common words have irregular plurals (child → children)

• Start with the most common patterns
• Focus on frequently used words
• Practice with real examples in sentences
• Pay attention to pronunciation changes