Conditional sentences look at possible situations and the most common types of conditional sentences involve the word ‘if’. In this lesson, we explain the four types of conditionals. We use the zero ...

We use the zero conditional to talk about things which always happen if a particular action takes place. These can be scientific facts, or things we believe are always true. When you take exercise, ...

We use the third conditional to talk about imagined past events: things that might have happened in the past, but didn’t happen. She wouldn’t have become ill if she’d taken the medicine. It would have ...