Condition

1. As well as if, there are a number of other words and phrases for expressing condition
_ You can't come in unless you have a ticket.
_ You can borrow the bike on condition that you return it by five o'clock.
_ In case of fire, dial 999.
_ You can stay, as long as you don't mind sleeping on the sofa.

Note: supposing & what if (for possible situations in the future)
_ What if is more direct.
_ Supposing/what if he doesn't turn up/

2. Conditions with -EVER
_ However you do it, it will cost a lot of money.
_ You'll get to the railway station, whichever bus you take.
_ Whoever wins the General Election, nothing will really change.
_ That box is so big it will be in the way wherever you leave it.

These four sentances can also be expressed using 'no matter'
_ No matter how you do it, it will cost a lot of money.
_ You'll get to the railway station, no matter which bus you take.

3. Some nouns which express conditions
_ Certain conditions must be met before the Peace Talks can begin.
_ A good standard of English is a prerequisite (n- điều kiện tiên quyết) for studying at a British University.
_ What are the entry requirements (n- nhu cầu; thủ tục) for doing a diploma in Management at your college?
_ I would not move to London under any circumstances (n- hoàn cảnh, trường hợp). It's awful!

Some examples:
_ You cannot enter unless you have an Entry Visa.
_ You may go on to university as long as you get 70% (Unless you get 70% in the exam, you cannot go on to university).
_ You can't come in unless you're over 18.
_ Visitors may enter the mosque on condition that they remove their shoes.

_No matter where she goes, she always takes that dog of hers.
_ If anyone rings, I don't want to speak to them, whoever it is.
_ Whatever I do, I always seem to do the wrong thing.
_ On what condition would you lend a friend your house/flat?