| Conditional | If Clause | Result Clause | Use |
|---|---|---|---|
| Zero | Simple Present | Simple Present / Imperative | Scientific facts, general rules |
| Type I | Simple Present | will / can / should + Verb 1 | Real possibilities in the future |
| Type II | Simple Past | would / could / might + Verb 1 | Unreal present or future situations |
| Type III | Past Perfect (had + Verb 3) | would / could / might + have + Verb 3 | Unreal past conditions and regrets |
When you use it
Use this table to balance tenses between conditional if clauses and their main result clauses.
Watch out
Never put would in the if clause itself, and do not mix past perfect with a simple base verb.
Drafted from Grade 12 English, pages 54-73, then checked twice before it went up

