Question

Вставьте где нужно "a" или "an" ...ruler ...eraser ...pencil case ...notebook ...atlas ...blackboard ...book ...school bag ...pen ...pencil ...notepad ...timetable

Answer 1

Перед гласными — an 
Перед согласными — a

Answer 2

A ruler
an eraser
a pencil case
a notebook
an atlas
a blackboard
a book
a school bag
a pen
a pencil
a notepad
a timetable

Answer 3

"a" or "an" usage

When deciding whether to use "a" or "an" before a noun, we consider the sound that follows the article. If the noun begins with a vowel sound, we use "an." If the noun begins with a consonant sound, we use "a."

Let's go through the given words and determine whether to use "a" or "an" before each one:

- a ruler: The word "ruler" begins with a consonant sound, so we use "a" before it. - an eraser: The word "eraser" begins with a vowel sound, so we use "an" before it. - a pencil case: The word "pencil" begins with a consonant sound, so we use "a" before it. - a notebook: The word "notebook" begins with a consonant sound, so we use "a" before it. - an atlas: The word "atlas" begins with a vowel sound, so we use "an" before it. - a blackboard: The word "blackboard" begins with a consonant sound, so we use "a" before it. - a book: The word "book" begins with a consonant sound, so we use "a" before it. - a school bag: The word "school" begins with a consonant sound, so we use "a" before it. - a pen: The word "pen" begins with a consonant sound, so we use "a" before it. - a pencil: The word "pencil" begins with a consonant sound, so we use "a" before it. - a notepad: The word "notepad" begins with a consonant sound, so we use "a" before it. - a timetable: The word "timetable" begins with a consonant sound, so we use "a" before it.

Remember, the choice between "a" and "an" depends on the sound that follows the article, not the actual letter.