IS THE SENTENCE CORRECT? >> I take the bus to work because it's more quickly than going by car.
Nope. *quicker
IS THE SENTENCE CORRECT? >> Olga drives slower than Bill.
Correct!
IS THE SENTENCE CORRECT? >> I prefer visiting Paris in winter. It's less crowded than in summer.
Correct! The opposite of 'more' is 'less', which can also be used.
IS THE SENTENCE CORRECT? >> Now I've tried them on, these shoes are more comfortable that I thought they were going to be.
Nope! . . .more comfortable *than* . . .
IS THE SENTENCE CORRECT? >> In this photo, you look more young than your sister.
Nope! *younger*
IS THE SENTENCE CORRECT? >> Black cabs in London are more expensive than other taxis.
Correct!
IS THE SENTENCE CORRECT? >> Anne's not as tall as Susie, but she's thinner.
Correct!
IS THE SENTENCE CORRECT? >> German trains are moderner than British ones.
Nope! . . . *more modern*
IS THE SENTENCE CORRECT? >> I love riding my scooter, it's more better than driving a car.
Nope! . . . it's *better* than . . .
IS THE SENTENCE CORRECT? >> Can you say that more slowly, please? I didn't understand a word!
Correct!
IS THE SENTENCE CORRECT? >> It's the most beautiful beach I've never been to. The sea looks amazing!
Nope! . . . I've *ever* been to . . .
IS THE SENTENCE CORRECT? >> Sean's the worse actor in the group, but he's the best singer.
Nope! . . . the *worst* . . .
IS THE SENTENCE CORRECT? >> What's the nicest thing anyone's ever said to you?
Correct!
IS THE SENTENCE CORRECT? >> Personally, I think that Barcelona is the best city of the world.
Nope! . . . best city *in* the world.
IS THE SENTENCE CORRECT? >> Which sofa is more cheaper? The yellow one or the blue one?
Nope! . . . *cheaper* . . .
IS THE SENTENCE CORRECT? >> I think we should take this case. It's the biggest one we have.
Correct!
