Kalpana said that she had been working at a call centre before she started teaching. Kalpana said, ‘I was working at a call centre before I started teaching.’ Kalpana said that she had taught in a school for two years. Kalpana said, ‘I taught in a school for two years.’ Kalpana said that she had been teaching in a school for the past one year. Kalpana said, ‘I have been teaching in a school for the past one year. Kalpana said that she had taught in a school.
Kalpana said, ‘I have taught in a school.’ Kalpana said that she was teaching in a school. Kalpana said, ‘I am teaching in a school.’ Kalpana said that she taught in a school. When we report something after a certain period of time, and what we are talking about has already happened, we change the tense of the sentence being reported into a corresponding past tense.
