Another way to make first conditional sentences is to use ‘unless’ which means ‘only if’ or ‘except’. As with ‘if’, the word ‘unless’ can never be followed by ‘will’ but only by the present simple.
The zero conditional has two clauses: theconditional clauseand themain clause. Conditional clause This clause describes the action or condition that makes the main clause true. We can use "when" or "if": "when": it will happen "When I go on holiday ..." (I will have a holiday – ...
Now the first argument still holds: for any valuation, evaluating the declarations and assertions in a left to right order, and stopping when an evaluation yields false, will not run into division by zero. But the text contains a fracterm which under all circumstances (i.e., for all valuat...