USED TO

  

Mary and Sophia stopped playing with their dolls three  years ago.

They do not play with their dolls any more.

They used to play every day.

You can use USED TO to talk about past habits and situations.

Something used to happen: something happened regularly in the past but not longer happens.

                      I used to play tennis a lot but I do not play very often now.

I used to do something is past. There is no present form. You cannot say "I use to do" 

You also use USED TO ... for something that was true but it is not true any more.

This buiding is now a furniture shop, It used to be a cinema.

The formal question form is DID (YOU) USE TO...? 

Did you use to eat a lot of sweets when you were a child?

Yes, I did  /  No, I didn`t

The negative form is DIDN´T USE TO

I didn´t use to eat a lot of sweets

SUPERLATIVES

               
The Niles is the longest river of the world                The blue whale is the biggest animal od the world

                                                   
                                               The cheetah is the fastest animal of the world

The superlative form is EST or MOST

In general, we use EST for short words and MOST for long words.

   Long - Longest                                    Hard - hardest
   Hot   - hottest

Most famous                                          More dangerous


These adjectives are irregular:   good - best
                                                   bad   - worst
                                                   far    - furthest

We normally use THE before the superlative.

Example: Yesterday was the hottest day of the year.

Adverbs of frequency

COMPARISON

                                       How shall we travel?  By car or by train?

                                             Let´s go by car. It is cheaper.

                                      Don´t go by train. It is more expensive.

Cheaper and more expensive are comparative forms.

After comparatives you can use than

It is cheaper to go by car than train

Going by train is more expensive than going by car.

The comparative form is er- or more...

We use -er for short words (one syllable)

cheap - cheaper                             fast - faster
large - larger                                  thin - thinner

We also use -er for two-syllable words that end in -y (-y - ier)

Lucky - luckier                              early - earlier
easy - easier                                  pretty - prettier

You are older than me.
I would like to have a bigger car.

We use more... for longer words (two syllables or more)
more modern                              more serious
more quietly                                more comfortable

You are more patient than me.

These adjectives and adverbs have irregular comparative forms:

good / well  - better 

I know him well, probably better than anybody else.

bad / badly - worse

He did very badly in the exam, worse than expected.

far - further (or father).

It is long walk from here to the station, further than I thought.