Adjectives and adverbs - old/older; expensive/more expensive (comparative forms)

Question 1

* The comparative is -ER (older) or MORE … (more expensive).
   # Short words (1 syllable) → -ER:
      old → older
      slow → slower
      cheap → cheaper
      nice → nicer
      late → later
      big → bigger

# Words ending in -Y → -IER:
easy → easier
heavy → heavier
early → earlier

# far → further

  # Long words (2/3/4 syllables) → MORE:
     careful → more careful
     polite → more polite
     expensive → more expensive
     interesting → more interesting

Answer 1

…Rome is old, but Athens is older. (not more old)
…Is it cheaper to go by car or by train? (not more cheap)
…Helen wants a bigger car.
…This coat is OK, but I think the other one is nicer.
…Don’t take the bus. It’s easier to take a taxi. (not more easy)

…A: How far is it to the station? A mile?
B: No, it’s further. About two miles

…You must be more careful.
…I don’t like my job. I want to do something more interesting.
…Is it more expensive to go by car or by train?

Question 2

• good/well → better

* bad → worse

Answer 2

…The weather wasn’t very good yesterday, but it’s better today.
…‘Do you feel better today?’ ‘No, I feel worse.’
…Which is worse - a headache or a toothache?