To say that people, things etc are unequal in a particular way, we can use comparative adjectives/adverbs.
- She is older than me.
- Tom is taller than his brothers.
- Iron is more useful than any other metal.
- He is cleverer than her.
In an informal style, object pronouns are used after than. In a more formal style, subject pronouns are used usually with verbs.
- He is cleverer than she is.
- He earns more than I do.
We can use double comparatives (…er and …er or more and more …) to say that something is changing.
- You are getting fatter and fatter.
- We are going more and more slowly.
The + comparative expression + subject + verb
We can use comparatives with the … the … to say that things change or vary together. Note the word order in both clauses.
- The more I study, the less I learn. (NOT … I learn the less.)
- The older I get, the happier I am. (NOT … I am the happier.)
More can be used with a noun in this structure.
- The more money he makes, the more useless things he buys.