Comparative and Superlative Adjectives

Comparative adjectives are used to compare two things or people to each other. •A bus is bigger than a car. •Bill is older than Harry. Superlative adjectives are used to compare one member of a group to the whole group. We use the with a superlative adjective. •The Nile is the longest river in the world. •In our class Maria is the oldest and Charlie is the youngest.
FORMATION
Form	Adjective	Comparative	Superlative
One syllable :	long	longer than	the longest
(add : -er / -est)	nice	nicer than	the nicest
	hot	hotter than	the hottest
Two or more syllables :	famous	more famous than	the most famous
(add: more-less/most-least before the adjective)	interesting	less interesting than	the least interesting
	practical	more practical than	the most practical
Two syllables ending in -y :	funny	funnier than	the funniest
(the 'y' becomes 'i' before -er/-est)	easy	easier than	the easiest
	happy	happier than	the happiest
Irregular Adjectives :	good	better than	the best
	bad	worse than	the worst
	much/many	more than	the most
	little	less than	the least
	far	farther/further than	the farthest/furthest
N.B. :   Adjectives ending with a vowel and a consonant double the consonant big  -  bigger  -  biggest except when the consonant is 'w' or 'y' :  new - newer - newest.

A - AN - THE

A - AN :

A and an are indefinite articles used to refer to a singular countable noun.

An indefinite article means that we do not know which one, or it is not important 

to know it. 

Which one to use:  'a' or 'an'?

The rule states that “a” should be used before words that begin with consonants

(b, c ,d etc.) while “an” should be used before words that begin with vowels (a,e,i, etc.).

It should be noted, however, that the usage is determined by the pronunciation and

not by the spelling, and this includes abbreviations and acronyms.

To simplify, one uses 'a' before a word that begins with a consonant SOUND,

and 'an' before a word that begins with a vowel SOUND. 

A is used before :

• a consonant (b, c, d, f, g, etc.)         a car/a hotel

• a vowel that is pronounced like "yu"            a European/a university

• the vowel 'o' when it has a "w" sounda one-way street

An is used before :

• a vowel  (a, e, i, etc.) :         an animal/an elevator 

• an unaspirated 'h':   an hour/an honest man

• abbreviations starting with a vowel sound:an MBA ('em' sound)

THE :

The is a definite article used to talk about something specific. 

• The town where Julie lives is very big.
• What book is Julie reading? She's reading the book Tom gave her.

The is also used to refer to:

• Rivers, seas, oceans :
  • the Mississippi river, the Mediterranean sea, the Atlantic ocean
• Nationalities :
  • the British, the Americans, the Japanese, the Chinese, etc.

Be/Get used to

- Be/get 'used to' + noun
- Be/get 'used to' +  -ing

Affirmative	Negative		Interrogative
	Long Form	Contracted Form
I am used to driving	I am not used to driving	I'm not used to driving	Are you used to driving?

• To be used to something means to be accustomed to it.
• To get used to something means to become accustomed to it.
• 'Used to' refers to something that was strange before and has become familiar,
   something that you have learned to accept.
• 'Used to' is followed either by a noun or by a verb ending in -ing.
  
  
  • Noun
    
    • Tom is used to noise.
    • Julie is used to hard work.
  • Verb
    • Tom is used to living in a noisy street.
    • Julie is used to working hard.
• 'Used to' is used with be and get in all tenses : past, present, future and conditional.
  
  
  • Now that I live in France, I am used to driving on the right.
  • Since I moved to the city, I have got used to noise.
  • Before I lived in Italy, I wasn't used to eating pasta.
  • I wasn't used to the weather.  It took me some time to get used to it.

Used to + Infinitive

Affirmative	Negative		Interrogative
	Long Form	Contracted Form
I used to smoke	I did not use to smoke	I didn't use to smoke	Did you use to smoke?

The structure used to + infinitive is used to refer to a past habit or situation
which no longer exists at the present time.

• It refers to past habits and states that do not exist today, something that
  you did regularly or repeatedly in the past but no longer do today.
• It exists only in the past.
  
  Here are some examples :
  
  
  • Tom used to drink coffee.  Now he prefers tea.
  • Julie used to fly from London to Paris.  Now she takes the Eurostar.
  • I used to drive to work.  Now I take the underground.
  • Bill used to live in Wales.  Now he lives in Scotland.
  • Wendy used to eat meat.  Now she's a vegetarian.
• This structure cannot be used to say how often something happened,
      or how long it took.
  • Julie used to visit Paris seven times. Julie visited Paris seven times.
  • Bill used to live in Wales for three years. Bill lived in Wales for three years.

SHOULD - OUGHT-TO - NEED

SHOULD_OUGHT-TO

Should and ought to are interchangeable for advice and conclusions :

• You should / you ought to write to your grandmother.
• He has revised all day; he should / he ought to be ready for his exam.

Should is also used : 

• In hypothetical situations :
  • Should anyone call, please take a message.
  • Should you need any help, just call me.
  • If I were you, I should leave.
    (In this last example, 'would' is often used today.)
• With 'imagine', 'say' and 'think' to give tentative opinions :
  • I should think the journey will take about two hours.

NEED

Need expresses necessity.

• In summer we need to drink more often (= it is necessary for us to drink often.)
• You needn't / you don't need to take notes.  You'll get a summary.
  (=it is not necessary to take notes.)
• Need I / Do I need to do this? (=Is it necessary for me to do this?).