PROVIDING/PROVIDED (THAT), UNLESS, AS/SO LONG AS...

source: slideplayer.com

 source: slideshare.net

source: slidesharecdn.com

condiciones necesarias (= only if)
provided (that)	con tal que
providing (that)	con tal que
as / so long as	siempre que
on (the) condition (that)	a condición de que
but for + noun	de no ser por
condiciones imaginarias
assuming (that)	suponiendo que
in case, just in case	por si acaso
supposing (that)	suponiendo que

if - si 

whether - si

UNLESS (al menos que...)

• The poor man won’t be able to buy a new car unless he wins the lottery
• (El hombre pobre no podrá comprar un nuevo coche al menos que él gane la lotería)
• be able to: ser capaz de

• RECORDAR que con WILL/WON'T/WOULD/WOULDN'T usamos BE ABLE TO. ver reglas condicionales

  No usamaos CAN/COULD 

PROVIDE/PROVIDING - siempre que, mientras 

• Providing (that) the weather is fine, we'll have a picnic on Saturday
• (siempre/mientras que haga buen tiempo, nosotros iremos (tendremos) de picnic el sábado)
• THAT can be omitted
• Providing the weather is fine, we'll have a picnic on Saturday
• You can go to the party provided/providing you come back before midnight
• (puedes ir a la fiesta, siempre que vuelvas antes de medianoche)

ver reglas de omision de pronombres relativos.HERE

Relatives clauses can be omitted.HERE

AS LONG AS - siempre que, mientras 

• You can borrow my DVD player as long as you return it on Monday.
• (tu puedes pedirme prestado mi DVD siempre que me lo devuelvas el lunes)

• Unless
• Even if
• in case & if
• Only if
• Provided that
• As is & As long as
• Suppose that
• what if
• whether or not

ONLINE EXERCISES

• exercise 1 (if, when, unless)
• exercise 2 (unless, as long as, provided that, providing)
• exercise 3 (as soon as, if, unless)
• exercise 4 (unless, as long as, provided, providing)
• exercise 5 (unless, as long as, providing)
• exercise 6 (unless, as long as, providing)
• exercise 7 (if, unless, as long as)
• exercise 8 (if, unless)
• exercise 9 (if, unless)
• INTERMEDIATE QUIZZ
• DOWNLOAD PDF EXERCISE
• EXERCISE+KEY
• INTERACTIVE EXERCISE
• INTERACTIVE EXERCISE 2