The Past Simple, The Past Continous, The Past Perfect

1.      The Past Tense

            (+) Forbes awarded ServiceNow, Inc. as the World’s Most Innovative Companies in 2018.

            (-) Forbes didn’t award ServiceNow, Inc. as the World’s Most Innovative Companies in 2018.

            (?) Did Forbes award ServiceNow, Inc. as the World’s Most Innovative Companies in 2018 ?

            (Yes/No) Did Forbes award ServiceNow, Inc. as the World’s Most Innovative Companies in 2018 ?        Yes, it did.

            (When) When did Forbes award ServiceNow, Inc. as the World’s Most Innovative Companies ?

            (How) How did Forbes award ServiceNow, Inc. as the World’s Most Innovative Companies ?

2.      The Past Continuous

            (+) The managers were discussing a concept of new product at the meeting yesterday morning.

            (-) The managers weren’t discussing a concept of new product at the meeting yesterday morning.

            (?) Were the managers discussing a concept of new product at the meeting yesterday morning ?

            (Yes/No) Were the managers discussing a concept of new product at the meeting yesterday morning ?     Yes, they were.

            (What) What were the managers discussing at the meeting yesterday morning ?

            (How) How were the managers discussing a concept of new product at the meeting yesterday morning ?

3.      The Past Perfect

            (+) Microsoft Corporation had established its business before 1990.

            (-)  Microsoft Corporation hadn’t established its business before 1990.

            (?) Had Microsoft Corporation established its business before 1990 ?

            (Yes/No) Had Microsoft Corporation established its business before 1990 ? Yes, it had.

            (When) When had Microsoft Corporation established its business ?

            (How) How had Microsoft Corporation established its business before 1990 ?