Generally, we add -er to the end of short adjectives to form the comparative.
|
Adjective
|
Comparative
|
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Adjective
|
Comparative
|
|
long
|
longer
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|
short
|
shorter
|
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small
|
smaller
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deep
|
deeper
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high
|
higher
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slow
|
slower
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Look at these other rules:
|
Adjective ending
|
Example
|
Add
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Comparative adjective
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|
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|
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-e
|
wide
|
+ -r
|
wider
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consonant + vowel
|
big
|
double the final
|
bigger
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|
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+ consonant
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consonant + -er
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When we want to directly compare two things, places or people, we use than.
Cairo is bigger than London. Charlie is taller than Harry.