2Conditional sentences 1 main clause 2 conditional clause Real conditionals Type O The same tense in both clauses. Usually present tense. Tense form is the same in both clauses, referring to something which is always true. General truths and laws of nature. E.g. If it rains, people use umbrellas.
3Type 1 Referring to something that may happen in future. Present tenses (simple, continuous and perfect) in the conditional clause and future tense in the main clause.Be careful! If you fall, you’ll hurt yourself.If you’re working, I won’t disturb you.If you haven’t finished yet, I’ll wait.
5Instead of ‘will’ we can use must, may, might, can, could, should, be going to in the main clause. If he’s late, I might not meet him.If that happens, the police are going to feel rather silly.They should share the information with others if it’s important.But also: If he must go, I will go too.
6Unless = if ... notUnless includes negative meaning, no ‘not’ after unlessWe will play tennis tomorrow if it doesn’t rain.We will play tennis tomorrow unless it rainsIf I’m not busy, I will call you.Un less I’m busy, I will call you.
7Unreal conditional sentences Type 2Referring to imaginary or untrue present situations or unlikely future situations.Past simple or past continuous in the conditional clause and would + verb in the main clause.If I knew the answer, I would tell you. (But I don’t know)If you were driving any faster, we would be in danger. (But you’re not driving any faster)We can use might or could instead of would.If she paid more attention, she might understand the lessons better.
8Were instead of wasE.g. If I were you, I would give it more consideration.Tim would not live there if he were/was unhappy.
9Words instead of ‘if’ In case Suppose/supposing Providing/provided UnlessImagine
10Type 3 Imaginary past situation. Past perfect/continuous in the conditional clause and would have + past participle in the main clauseIf she had told me the truth, I would have tried to help her. (But she did not tell me the truth.)If it had been raining I would have taken a bus.I would have called you if I had had more time. (But I didn’t have time and didn’t call)
11Instead of would have in the main clause we can use might/could have E.g. If you had been late, I might have left.
12Mixed conditionals Type 2 and type 3 Type 2 in the conditional clause and type 3 in the main clause: if things were different in general, sth would have been different in the past too.If I spoke (type2) Russian better I would have got(type 3) the job.
13Type 3 in the conditional clause and type 2 in the main clause: if things had been different in the past, they would be different now too.E.g. If I had listened (type3) to your advice, I would not be (type2) in such a mess now.
14Alternatives to if provided/providing assuming suppose/supposing imagineas long ason condition thateven ifin case + present tense= because .... mightI’ll leave the paper here, in case he wants to read it. (=he might want to read it)in case + noun (if there is/are)In case of fire, call the fire brigade.
15Imperative clauses in conditional sentences If you want to see him, give him a call.Don’t go to the party if you want to pass the exam.
16Inversion in conditional sentences Type 1In the conditional clause if → shouldIf I hear from him, I will call you.Should I hear from him, I will call you.
17Type 2If smb/sth were → Were smb/sthIf they were here now, I would be in trouble.Were they here now, I would be in trouble.If smb had sth → Had smb sthIf he had more money, he would buy a new car.Had he more money, he would buy a new car.
18Type 3If smb had done sth → Had smb done sth.If he had told me earlier, ...Had he told me earlier, ...
19I wish /If only structures Past regretPast perfect/continuous: had(not)done/had (not) been doingI wish I had told him the truth. (But I didn’t)I wish I had had more time.I wish she had come with me.She wishes Paul had never talked to her.I wish I had not/hadn’t been there. (But I was)
20Present wishPast simple/continuous:did or didn’t do /was,were (not) doingI wish I knew the answer. (But I don’t know)I wish I were sleeping right now.(But I’m not)I wish you were here. (But you’re not)She wishes it wasn’t/weren’t raining. (But it is)I wish they didn’t go yet. (But they do)
21would (not) dopolite imperativeI wish you would stop shouting (Stop shouting!)A wish for a situation or smb’s behaviour to changeI wish you would clean your room more often.
22BUT: after I and we would → could I wish I could go there with you.If only we could stop the fight.