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Từ điển Oxford Learners Wordfinder Dictionary
if
see also CAUSE/EFFECT
- a word used to show that one thing depends on another: if
If it rains tomorrow, I'll take the umbrella. ◎ If I had enough money, I'd go on holiday. ◎ I'd have been a lot more careful if I'd known how dangerous it was. ◎ If you don't like it, don't drink it!
- something that must happen so that sth else can happen or be possible: condition
One of the conditions of the job is that you agree to work on Sundays.
- when we want to say that sth can only happen if a particular situation exists, we can use these expressions: only if ※¦, providing/provided (that) ※¦, as/so long as ※¦, on condition (that) ※¦
You can borrow my car but only if you put some petrol in it. ◎ She agreed to stay in the job, provided that they gave her more money. ◎ You can work here, as long as you don't make a noise. ◎ You can go to the disco on condition that you come home before midnight.
- when you think that sth will happen, and you talk about the result, you can say: assuming (that) ※¦
Assuming that Tom comes to the party, we can get a lift home with him.
- to talk about sth that you will do because sth else might happen, you can say in case
Leave me your address in case there are any letters for you. ◎ I don't think it'll rain, but I'll take my umbrella just in case.
※ if not
- a word that you use to say that one thing depends on something else happening or not happening: unless
Unless you stop talking (= if you don't stop talking), I shall have to ask you to leave the library. ◎ We can eat in the garden this evening, unless the weather changes (= if the weather doesn't change) .
- words that you use to say that sth will happen if sth else does not happen: otherwise, or else, if not
You must get to the station before 3 o'clock, otherwise you'll miss the train. ◎ You'd better write the phone number down or else you'll forget it.
※ imagining and wishing
- when you imagine a situation, you can say supposing ※¦, what if ※¦
Supposing we stayed at home this evening? Then we could watch that film on television. ◎ What if they find out? We must be very careful.
- when you wish sth, you can say if only
If only I had more money! ◎ If only I had tried harder!
※ more on wishing WANT
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