Understanding the exact timeline of actions through precise verb forms is mandatory for eliminating ambiguity in official legal drafting and exam questions.
- Present Indefinite Tense: Used for habitual actions, universal truths, scientific facts, and official proclamations. Structure: Subject + V1/V5 + Object. Example: 'The sun rises in the east.'
- Present Continuous Tense: Denotes actions happening at the time of speaking or temporary arrangements. Stative verbs (know, believe, belong) are generally not used in this tense.
- Present Perfect vs Simple Past: Present Perfect (Has/Have + V3) connects past action to present relevance (time not specified). Simple Past (V2) uses specific past time markers (yesterday, last week).
- Past Perfect Sequence: When two actions happened in the past, the earlier action takes Past Perfect (had + V3) and the later action takes Simple Past (V2). Classic formula: 'Before the doctor came, the patient had died.'
- Future Time Reference: Future actions based on fixed timetables or official schedules use Present Indefinite rather than Future Tense (e.g., 'The train leaves at 6 PM tomorrow').
| Tense Category | Common Time Markers | Standard Structure |
|---|---|---|
| Present Indefinite | Always, seldom, rarely, generally | Sub + V1/s/es + Obj |
| Present Perfect | Already, yet, just, so far, recently | Sub + has/have + V3 + Obj |
| Simple Past | Yesterday, ago, in 1947, last month | Sub + V2 + Obj |
| Past Perfect | By that time, earlier, before | Sub + had + V3 + Obj |