Formally, every sentence above looks like the first conditional, with the condition having future meaning, which was not our intention.

But this dependency of e on other than c has a perfect counterpart with respect to the first conditional.

Contradiction between the zero and first conditional.

Notice that in indirect speech reported in the past tense, the first conditional naturally changes to the second:

"First conditional" refers to predictive conditional sentences (see above section); here, normally, the condition is expressed using the present tense and the consequence using the future:

In English language teaching the most common patterns are referred to as first conditional, second conditional and third conditional; there is also a zero conditional and mixed conditional.

With regard to family benefit, access to equal treatment is first conditional on completion of a period of residence of five years, whereas the provision of transport benefit for students and trainees is dependent on the receipt of family benefit.

There is the objection, however, whatever else is to be said, that the third statement fails to follow from the first two only because of an ambiguity - and more precisely because the consequent of the first conditional is in fact not identical with the antecedent of the second.

The conditional mood has two more tenses: the first conditional (commonly used in conditional clauses, both for possible and impossible conditional clauses) and the second conditional (without use in the spoken language-it should be used for impossible conditional clauses).