Flashcards: Mastering English Conditional and Tense Structures — 14 cards

Present affirmative form

Base verb used for regular actions in present.

Preterit negative form

Did not + base verb indicates past non-occurrence.

Type 1 conditional — function?

Expresses real future possibilities.

Type 2 conditional — structure?

If + past simple, would + base verb.

Type 3 conditional — use?

Refers to unreal past situations.

Zero conditional — tense?

Both clauses use present simple.

Mixed conditional — purpose?

Links past unreal conditions with present or past results.

English conditional types — include?

Type 0, 1, 2, 3, and mixed conditionals.

Present perfect — structure?

Have/has + past participle.

Since — usage?

Starting point of duration in present perfect.

For — usage?

Duration of time in present perfect.

Conditional past — form?

Should have + past participle.

Zero conditional — example?

If you heat water, it boils.

Mixed conditional — example?

If I had studied, I would be successful now.