PAST PERFECT TENSE

Past perfect tense to express an act, jobs, events, events that happened in the past and still nothing to do with current events or to show something which was completed in record time.

☻ Active sentences :

Affirmative (+) ► S + have/has + verbs III
(I,You,We,They) + have + verbs III
(She,He,It) + has + verbs III

Negative (-) ► S + have/has + not + verbs III
(I,You,We,They) + have + not + verbs III
(She,He,It) + have + not + verbs III

Interrogative (?) ► Have/has + S + verbs III
Have + (I,You,We,They) + verbs III
Has +(She,He,It) + verbs III

Negative+Interrogative(-?) ► Have/has + S + not + verbs III
Have + (I,You,We) + not + verbs III
Has + (She,He,It) + not + verbs III


☺ Example :

(+) They had climbed the mountain until now
(-) They have not climbed the mountain until now
(?) Have they climbed the mountain until now ?
(-?) Have they not climbed the mountain until now ?