if clause

Supposition in grammar

An if clause is the conditional part of a sentence that sets up a hypothetical situation or condition: If it rains, we'll stay inside.

The if clause establishes what must be true for the main clause to apply.

Grammarians distinguish types based on how likely or real the condition is—from open possibilities if you come tomorrow to impossible counterfactuals if I had known.

Related

when · then · consequence · subjunctive · would · could · might · grammar · contingent · proviso · stipulation · assuming · provided · provided that · on condition that · given · in case · counterfactual

Opposites
conditional sentence structure

if clausemain clause

Self-sufficient sentence portion

independent clause

certainty of statement

if clauseassertion

Confident statement of fact

Family

if, clause, ifs, clauses, clausal

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Used worldwide · Timeless · Abstract · Rated G