1. Articles and Demonstratives

2. Lesson 2-Articles & Demonstratives
Articles are special adjectives that come before nouns.
The words a, an, and the are articles.
Example: The telescope was mounted on a large tripod.

3. Articles-The Use the to refer to a specific item(s). Examples: the sun
the eye
the stars

4. Articles-A & An Use a or an to refer to any one item in a group.
A is used before words beginning with a consonant.
An is used before words beginning with a vowel sound.
Examples:
a planet
an astronomer
an hour

5. Demonstratives
Adjectives that tell which one are called demonstrative adjectives.
They point out specific persons or things.
Example:
This planet is nearer to the sun that that star.
These telescopes are more powerful than those telescopes.

6. Demonstratives
The demonstratives this and these point out nearby people or things.
The demonstratives that and those point out people or things that are more distant.

7. Singular/Plural Demonstratives
Singular demonstratives:
this
That
Plural demonstratives:
these
those

8. Guided Practice The astronomers are observing (a, the) sky.
Directions: Write which words correctly completes each sentence.
The astronomers are observing (a, the) sky.
This observatory has (a, an) enormous telescope.
We made a visit to (a, an) observatory.
The sky was very clear (that, those) evening.
(This, These) chart shows the constellation Pisces.