Study the rules and complete the examples

The Comparative Form

When we want to compare two people or things, we use adjectives in the comparative form + than:

• Pete is 8. Tom is 5. Pete is older than Tom.

Short (1-syllable) adjectives: adjective + er:

• young – younger;
• small –
  [ ].

Short adjectives ending in –e: adjective + r:

• safe – safer;
• large – [ ]
  .

Adjectives ending in a short vowel and a consonant: double the consonant + er:

• hot – hotter;
• big –
  [ ].

Adjectives with 2 syllables ending in -y: change –y into –i + er:

• easy – easier;
• happy –
  [ ].

Long adjectives (2 and more syllables): more + adjective:

• interesting – more interesting;
• beautiful – [ ]
  .

Some adjectives can use –er or more + adjective:

• clever – cleverer or more clever;
• narrow – [ ]
  or [ ]
  .

Some adjectives are irregular:

• good - better;
• bad – worse.

Saying that people or things are (not) similar

We use as + adjective + as to say that two people or things are similar. We do not use the comparative form with as… as:

• Film 1 is very interesting. Film 2 is very interesting. Film 2 is as interesting as Film 1.
• Car 1 is very fast. Car 2 is very fast. Car 2 is as [ ]
  as Car 1.

We use not so/as + adjective + as to say that two people or things are not similar. We do not use the comparative form with so/as… as::

• Jim is tall. Tom is not very tall. Tom is not so tall as Jim.
• Dogs are friendly. Cats are not very friendly. Cats are not as [ ]
  as dogs.