(i) To denote a single act in the
1, l killed a snake. 2. She stood first in
(ii) To denote an habitual action in the past;
The Quaid-i-Azam worked (=used to work) till late
(B) The Past Continuous. --- It is used
to denote an action as going on at some point in
the past time; as,
She was suffering from fever when l met her first.
(C) The Past Perfect. ---- It is used to
denote an action completed at some point in the
past time, before another action was begun. We use
the Past Perfect Tense for the earlier action; and
the Past Indefinite Tense, for the subsequent one;
1. The train had stopped, when we came out.
2. I had posted the letter, before I went to school.
(D) The Past Perfect Continuous. ---- It
is used to denote an action that was finished at
some definite time in the Past, but which had been
going on before it was finished; as,
1. It had been raining since 4 o’clock.
2. We had been playing hockey for twenty minutes,
The Prepositions since and for are used to denote
a point of time and a period of time respectively.