Our teacher explains a new rule every lesson. She is explaining a new rule right now. She has just expected a new rule. She explained a new rule yesterday. She was explaining a new rule from 2 till 3 o'clock yesterday. She had explained a new rule by 12 o'clock. She will explain a new rule tomorrow. She will be explaining a new rule from 1 till 3 tomorrow. She will have explained a new rule by that time tomorrow.
She is explaining a new rule right now.
She has just expected a new rule.
She explained a new rule yesterday.
She was explaining a new rule from 2 till 3 o'clock yesterday.
She had explained a new rule by 12 o'clock.
She will explain a new rule tomorrow.
She will be explaining a new rule from 1 till 3 tomorrow.
She will have explained a new rule by that time tomorrow.