Common mistakes with plural forms



Mistakes because of irregular plural forms

1) The noun 'child' has an irregular plural form (i.e. children):

My childs were playing in the street when they saw the accident. X
My children were playing in the street when they saw the accident. 

2) The noun 'mouse' has an irregular plural form (i.e. mice):

Some people are afraid of mouses. X
Some people are afraid of mice. 

3) The noun 'man' has an irregular plural form (i.e. men)

The mans have decided to go out for the night. X
The men have decided to go out for the night. 

4) The noun 'woman' has an irregular plural form (i.e. women):

There are so many beautiful womans in the world. X
There are so many beautiful women in the world. 

5) The noun 'foot' has an irregular plural form (i.e. feet):

People have two foots. X
People have two feet. 

6) The noun 'ox' has an irregular plural form (i.e. oxen):

Oxes are very strong animals. X
Oxen are very strong animals

7) The noun 'person' has an irregular plural form (i.e. people):

I don't like persons who are cruel to animals. X
I don't like people who are cruel to animals. 

Please note: You can use the plural form 'persons' in formal writing. It is common to see this plural form in legal documents (e.g. contracts).

8) The noun 'tooth' has an irregular plural form (i.e. teeth):

Adults have 32 tooths. X
Adults have 32 teeth. 

Mistakes because of identical singular and plural forms

1) The noun 'sheep' has identical singular and plural forms:

There is a sheep. (singular form)
There are 25 sheeps. X
There are 25 sheep. (plural form)

2) The noun 'deer' has identical singular and plural forms:

If I only see one deer in my lifetime, I will be happy. (singular form)
Have you seen all the deers? X
Have you seen all the deer? (plural form)

3) The noun 'fish' has identical singular and plural forms:

John's new fish has beautiful colours. (singular form)
I want to buy 10 new fishes for my aquarium. X
I want to buy 10 new fish for my aquarium. (plural form)

Please note: You can use the plural form 'fishes' when you talk about different species of fish. 

4) The noun 'moose' has identical singular and plural forms:

I have never seen a moose. (singular form)
Mooses are common in North America. X
Moose are common in North America. (plural form)

5) The noun 'aircraft' has identical singular and plural forms:

John would prefer to fly in in an aircraft that is fully-functional. (singular form)
There are plenty of aircrafts at the airport although most of them are airplanes. X
There are plenty of aircraft at the airport although most of them are airplanes. (plural form)

6) The noun 'series' has identical singular and plural forms:

My favourite TV series of all time is Friends. (singular form)
You should watch at least 5 great TV serieses in your life. X
You should watch at least 5 great TV series in your life. (plural form)

Mistakes because of compound nouns

When we make plural forms of compound nouns, we only make one word of the compound noun plural. Look at these examples:

I don't have any sisters-in-laws. X
I don't have any sisters-in-law. 

Mona has to set several alarms clocks to wake up in the morning. X
Mona has to set several alarm clocks to wake up in the morning.

Lesson Vocabulary

identical (adjective) = exactly the same

plural forms
feet (noun)

plural forms
deer (noun)

plural forms
aquarium (noun)

plural forms
teeth (noun)

plural forms
moose (noun)

Exercise

Your turn! Can you guess or find out what the plural forms of the words below are?

(1) loaf (2) volcano (3) cactus (4) analysis (5) phenomenon (6) life (7) offspring (8) boy (9) shrimp (10) squid

Please leave your answer in the comments section and I will gladly give you some feedback. Enjoy!

4 comments:

Anonymous said...

This is my answer Teacher! :)
1. Loaf-> Loaves
2. Volcano -> Volcanoes
3. Cactus ->Cacti
4. Analysis -> Analyses
5. Phenomenon -> Phenomena
6. Life -> Life
7. Offspring - >Offsprings
8. Boy - > Boys
9. Shrimp - > Shrimps
10. Squid ->Squids

_Anau_

Francois Oosthuizen said...

Thanks for your answers, Ana! You did a good job with these!

1) Good!
2) Great!
3) Good!
4) Good
5) Great!
6) life -> lives (when it is countable)
7) offspring -> offspring (identical singular and plural forms)
8) Good!
9) Good! The plural form can also be 'shrimp'.
10) squid -> squid (identical singular and plural forms)

M. Hakim said...

Hi francois. Thanks for this exercise.Here is my answer.
(1) Loaf- I like handmade loaf.
Loaves-We need additional 2 million loaves daily.
2) Volcano-Have you ever been to Iceland
volcano.
Volcanoes-I want to learn more about under
sea volcanoes.
(3) Cactus-I like cactus very much.
Cactuses-I would like to buy some cactuses/ cacti.
(4) Analysis-Your analysis is correct.
Analyses-I do not agree with their analyses (5) Phenomenon-It one of the significant
phenomenon.
Phenomena-How do you explain these
phenomena.
(6) life-I was trying to safe a life of a dog.
Lives-We should always try to safe lives of
animal.
(7) Offspring-He is a offspring of a great
singer.
Offspring-They are the offspring of a king. (8) Boy-He is my boy.
Boys-The Boys were playing cricket.
(9) Shrimp-Do you like shrimp.
Shrimps-Shrimps are available in Bangladesh (10) Squid-I want to see a squid.
Squid- You can see squid in the sea.

Francois Oosthuizen said...

You're welcome, M. Hakim. Thanks for your answers. I haven't looked at the sentences. I only looked at the plural forms.

1) Good!
2) Great!
3) Good! 'Cacti' is also correct!
4) Good!
5) Great!
6) Correct!
7) Good!
8) Good!
9) Great! The plural form can also be 'shrimp'.
10) Good!

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