在英语中，大多数可数名词的复数形式是在名词后加上“-s”或“-es”。但英语中有也有不少不规则名词复数形式。比如，“mouse 老鼠”的复数形式是“mice”。做下面的测试， 看看你是否掌握了常用不规则名词的复数形式。

1. What is the plural noun for more than one tooth?

a) tooths

b) toothes

c) teeth

d) teeths

2. Which word has an irregular plural form?

a) child

b) foot

c) goose

d) all of the above

3. We have one sheep but what do we say if there are more than one?

a) sheep

b) sheeps

c) sheeplings

d) sheepies

4. Which sentences correctly uses irregular plural nouns?

a) Womans are allowed to get on the bus first

b) Woman are allowed to get on the bus first

c) Women are allowed to get on the bus first

d) Womens are allowed to get on the bus first

5. Which one of these is a correct irregular plural noun?

a) childrens

b) babys

c) persons

d) none of the above

6. For most nouns that end in "f" or "fe" you drop the "f" or "fe" and add what?

a) ves

b) ies

c) es

d) a

1) c, 2) d, 3) a, 4) c, 5) d, 6) a.