THE TYPES OF CONDITIONAL SENTENCES
Conditional sentences (if-clauses, main clauses) * The conditional sentences are sometimes confusing for learners of English. Watch out: 1) Which type of the conditional sentences is used? 2) Where is the if-clause (e.g. at the beginning or at the end of the conditional sentence)? There are three types of the if-clauses. 1- The Zero Conditional: (if + present simple, ... present simple) * When we talk about things that are generally or always true, we can use: - If/When/Unless plus a present form PLUS present simple or imperative.examples: - If he gets there before me, ask him to wait. - When you fly budget airline, you have to pay for your drinks and snacks. - Unless you need more space, a small car is big enough for one person. * Notice that 'unless' means the same as 'if not'. * We can make a zero conditional sentence with two present simple verbs (one in the 'if clause' and one in the 'main clause'): If + present si...