Conjunctions / Grammar

Existem três tipos principais de conjunções.

Correlative conjunctions

Essa conjunção tem como objetivo ligar elementos que possuem a mesma função gramatical. Abaixo os exemplos.

Conjunction		Function
As/So      =	as	Comparison
Both        =	and	Addition
Either      =	or	Alternative
Neither    =	nor	Alternative/Contrast
Whether  =	or	Condition
Not only  =	but also	Addition

Coordinating conjunctions = FANBOYS = For, And, Nor, But, Or, Yet, So

Essa conjunção liga duas palavras ou orações que possuem a mesma estrutura gramatical. Geralmente essa conjunção fica entre as palavras ou orações, ás vezes necessitando do uso de uma vírgula antes dela.  

Conjunction	Function
For	Reason
And	Addition
Nor	Negation
But	Contrast
Or	Connect
Yet	Concession
So	Effect

Subordinating conjunctions

Essa conjunção é diferente da coordinating conjunction, sua função não é para conectar ideias independentes como iguais, mas sim, para mostrar uma relação entre duas ideias em que uma delas é uma cláusula dependente ou subordinado. Necessitando de uma virgula entre elas. Uma oração dependente e uma oração independente.

Conjunction	Function
After	Time
Although	Contrast
As	Reason
As much as	Comparison
As soon as	Time
As if	Cause/effect/manner
Because	Reason
Before	Time
Even if	Contrast
Even though	Contrast
If	Condition
since	Time/reason
so that	Cause/effect
Than	Comparison
That	Relative pronoun
though	Contrast
Unless	Condition
Until	Time/condition
Whatever	Relative pronoun
When	Time
Whenever	Contrast/Time
Where	Place
Whereas	Contrast
Wherever	Place
Whether	Cause/effect
While	Condition
Who	Relative pronoun
Why	Reason

Examples Coordinating Conjunctions

1. My sister is married and (she) lives in England.
2. I like him, but I don't like her.
3. We didn't study, so we didn't pass.
4. He could go to the concert or stay in.
5. a) I'm not going. b) Nor am I.
6. It's a small car, yet it is surprisingly spacious. 
7. I listened to your problems, for you explain what happened.

Examples Subordinating Conjunctions

1. As you know he lives in Brazil.
2. The match ended before I got the time.
3. I went home after the concert finished.
4. Although it was snowing, we went out.
5. If you leave me now, you’ll take away the biggest part of me.
6. Whenever you call, I'll always remember the part of you so kind.
7. Because I worked fast, Ifinished early.
8. Do I have to wait until tomorrow?
9. This is where I live.
10. Let's have dinner out, unless you're too tired.

Examples Correlative Conjunctions

1. Susana is both intelligent and pretty.
2. Whether you stay or go is your decision.
3. I neither smoke nor drink.
4. We can go either by car or by bus.
5. The director is not only intelligent, but also creative.
6. She is as/so beautiful as her mother.