Use of Comparative Adjectives
We use comparative adjectives when talking about 2 things (not 3 or 10 or 1,000,000 things, only 2 things).
Often, the comparative adjective is followed by "than".
Look at these examples:
- John is 1m80. He is tall. But Chris is 1m85. He is taller than John.
- America is big. But Russia is bigger.
- I want to have a more powerful computer.
- Is French more difficult than English?
If we talk about the two planets Earth and Mars, we can compare them as shown in the table below:
|Diameter (km)||12,760||6,790||Mars is smaller than Earth.|
|Distance from Sun (million km)||150||228||Mars is more distant from the Sun.|
|Length of day (hours)||24||25||A day on Mars is slightly longer than a day on Earth.|
|Moons||1||2||Mars has more moons than Earth.|
|Surface temperature (degrees Celcius)||22||-23||Mars is colder than Earth.|
- Mt Everest is higher than all other mountains.
see also Superlative Adjectives