Look at the photo above. There are two dogs: a chihuahua and a great dane. Of course, the great dane is a
big dog, and the chihuahua is a
small dog.
Chihuahuas and great danes are both dogs, but, great danes are
bigger than chihuahuas. Chihuahuas are
smaller than great danes.
Words like bigg
er and small
er are called
comparatives: words we use to compare two (and sometimes more) things.
Short adjectives like
big and
small usually have "
er" endings in the comparative form. Words like
prettythe "y" becomes "i": prett
ier.
Longer adjectives like
expensive and
beautiful, we add "
more" or "
less". For example: an iPhone is
more expensive than an Android phone.
Be careful: there are
exceptions to the rule about long and short adjectives. Look at the example below:
Math is boring, but history is boringer.
Math is boring, but history is more boring.
If you want to show a big difference, you can add the word "much" to the comparative. an iPhone is much more expensive than an Android phone.