Grammar worksheet designed to help students practice forming plural nouns by adding an 's' to singular words.

Problem Overview:

The task is to convert singular nouns into their plural forms by adding an "s" to each noun. This exercise focuses on understanding the basic rule of forming plurals for most nouns in English.

Solution:

We will go through each noun and add an "s" to form its plural form. Here are the solutions:

1. table → tables
2. friend → friends
3. spoon → spoons
4. hat → hats
5. phone → phones
6. lamp → lamps
7. cow → cows
8. teacher → teachers
9. car → cars
10. park → parks
11. plant → plants
12. toy → toys
13. book → books
14. zebra → zebras
15. rock → rocks
16. store → stores

Explanation:

- The instruction specifies that we should add an "s" to make the plural form of each noun.
- For all the nouns listed, simply appending an "s" at the end correctly forms the plural form.
- This method works for most regular nouns in English. However, it's important to note that some nouns have irregular plural forms (e.g., "child" becomes "children"), but this worksheet focuses on regular nouns where the rule applies directly.

Final Answer:

\[
\boxed{
\begin{array}{ll}
1. \text{tables} & 2. \text{friends} \\
3. \text{spoons} & 4. \text{hats} \\
5. \text{phones} & 6. \text{lamps} \\
7. \text{cows} & 8. \text{teachers} \\
9. \text{cars} & 10. \text{parks} \\
11. \text{plants} & 12. \text{toys} \\
13. \text{books} & 14. \text{zebras} \\
15. \text{rocks} & 16. \text{stores} \\
\end{array}
}
\]