Resources

Adjectives

Adjectives are used to describe nouns, that is, people, places 
and things. Sometimes it  is necessary to use Be with adjectives:

John is big.  Marsha is thin. The food is delicious.  They are Russian.

Sometimes we use them before nouns:

The big man. The thin girl. The delicious food. The Russian people

Check here for a complete list of common adjectives

Some  adjectives with their compararatives and superlatives

are listed below:
                                                 (irregular adjectives)
angry - angrier - the angriest
bad - worse - the worst
beautiful - more beautiful - the most beautiful
big - bigger - the biggest
careful - more careful - the most careful
cheap - cheaper - the cheapest
difficult - more difficult - the most difficult
early - earlier - the earliest
easy - easier - the easiest
expensive - more expensive - the most expensive
far - farther - the farthest/ - further - the furthest
good - better - the best
healthy - healthier - the healthiest
heavy - heavier - the heaviest
kind - kinder - the kindest
loud - louder - the loudest
near - nearer - the nearest
new - newer - the newest
noisy - noisier - the noisiest
old - older - the oldest
proud - prouder - the proudest
small - smaller - the smallest
tall - taller - the tallest
ugly - uglier - the ugliest
young - younger - the youngest

Adverbs

Adverbs are used to describe verbs. We use adverbs to talk about
how someone does or did something.  A lesson on adverbs here.

David plays the guitar well.  She sings beautifully.  Mike works hard.

Some useful English adverbs are listed below. Remember that the
adjectives on the left are used to describe nouns:

bad - badly
beautiful - beautifully
careful - carefully
careless - carelessly
easy - easily
loud - loudly
polite - politely
slow - slowly
quick - quickly

A few are exceptions and don't take the -ly or -ily ending:

good - well
hard - hard
fast - fast

Articles

Articles are a big problem for students, because it's difficult to know
when to use them. There are three articles- a, an and the. A and an are indefinite articles, and are used before nouns not specifically identified by the speaker.

I bought a shirt.  A man is in the corridor. 
We heard a woman screaming.

In the above examples, the specific nouns referenced above have not been identified in the context. The is more specific, and identifies the noun in the context.

I bought the shirt.  The man is in the corridor.
We heard the woman screaming.

In these examples the shirt, the man and the woman all refer to entities that are known in context to the speaker and almost always to the listener also. As if to say, "I bought the shirt I saw in the shop yesterday. You were there with me and know about this shirt."