A zero conditional describes situations that are generally always true. It is formed by ____ and present simple. For example: People are tired if they ____ enough sleep. A first conditional describes a possible future situation. It is formed by a ____ condition (if/when) and a ____ result. For example: If you ____ a book before going to bed, you ____ a better night's sleep. A second conditional describes an imaginary present or future situation. It is formed by a ____ condition (if/when) and ____ as the result. For example: If I ____ earlier every night, I ____ more sleep. A third conditional describes an imaginary past situation. (impossible) It is formed by a ____ condition (if/unless/when) and ____as the result. For example: If I ____ up until 4am watching a film, I ____ been late for work.

Conditionals - Rules

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