Demonstrative adjectives worksheet for English language learners.

Let's solve this exercise step by step.

Task:

Fill in the blanks with "this is" or "these are", based on whether the noun is singular or plural.

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Rules to remember:

- Use "this is" for singular nouns.
- Use "these are" for plural nouns.

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Now, let’s go through each item:

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A) _________ an eraser.
👉 "eraser" is singular → use "This is"
✔ This is an eraser.

B) _________ a pencil.
👉 "pencil" is singular → use "This is"
✔ This is a pencil.

C) _________ pens.
👉 "pens" is plural → use "These are"
✔ These are pens.

D) _________ students.
👉 "students" is plural → use "These are"
✔ These are students.

E) _________ a notebook.
👉 "notebook" is singular → use "This is"
✔ This is a notebook.

F) _________ erasers.
👉 "erasers" is plural → use "These are"
✔ These are erasers.

G) _________ a book.
👉 "book" is singular → use "This is"
✔ This is a book.

H) _________ pencils.
👉 "pencils" is plural → use "These are"
✔ These are pencils.

I) _________ books.
👉 "books" is plural → use "These are"
✔ These are books.

J) _________ a student.
👉 "student" is singular → use "This is"
✔ This is a student.

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✔ Final Answers:

A) This is an eraser.
B) This is a pencil.
C) These are pens.
D) These are students.
E) This is a notebook.
F) These are erasers.
G) This is a book.
H) These are pencils.
I) These are books.
J) This is a student.

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🔍 Explanation:

The key is identifying whether the noun that follows the blank is singular or plural:
- If it's one thing (singular), use "This is".
- If it's more than one (plural), use "These are".

This helps learners understand how demonstrative adjectives work in English — they show proximity and number.

Let me know if you'd like a printable version or further explanation!