Conditionals help us talk about cause and effect. The zero conditional is for facts and things that are always true: 'If you press this button, the machine starts.' 'If I have a deadline, I always work better.' The first conditional is for realistic future situations: 'If we win this contract, we will hire three more people.' 'If you do not confirm by Friday, we will give the slot to another client.' We can replace 'if' with 'unless' (= if not): 'I will not attend unless the meeting is confirmed.' Or with 'as long as': 'I will agree to the change as long as the budget stays the same.'

๐Ÿ’ก Did you know? The conditional structure in English is one of the most important for business communication. Negotiation, agreements, and warnings all rely on conditional language โ€” making this one of the highest-value grammar points for professional English learners.