Subject : English

Category : Structure

Level : JHS VIII

Code : 8.5

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Present Simple Tense (for habitual actions in the present time)

Constructions :

(+) S + invinitive/invinitve-s (v₁/v-s)

(-) S + do/does + not + invinitive

(?) Do/Does + S + infinitive

Time signals : every ..., never, usually, always, sometimes, etc.

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Present Progressive Tense (for actions that are happening at the time of the utterance.)

Constructions :

(+) S + am/is/are + present participle (v-ing)

(-) S + am/is/are + not + present participle

(?) am/is/are + S + present participle

Time signals : now, right now, at the moment, at present, today, look!, listen!, etc.

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Present Perfect Tense (for actions that started in an unspecified time in the past and are "perfected" in the present)

Constructions :

(+) S + have/has + past participle (v₃)

(-) S + have/has + not + past participle

(?) Have/Has + S + past participle

Time signals : just, since ..., for ..., up to now, this week/month/year/etc, never, already, yet, etc.

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Past Simple Tense (for actions started and ended in the past)

Constructions :

(+) S + preterite (v)

(-) S + did + not + invinitive

(?) Did + S + infinitive

Time signals : yesterday, just now, last ..., ... ago, etc.