Simple Past Tense

To indicate that an action or activity that happened in the past and ended up at a certain moment in the past, and the time of occurrence is known.

Formula:

A  :     S + To be (was / were) + . . . . . . B  :     S + Verb 2 + . . . . . .

Pattern B:

Affirmative ( + )	Negative ( - )	Interrogative ( ? )
S + Verb 2	S + Did + Not + Verb 1	Did + S + Verb 1
I + Verb 2 We + Verb 2 They + Verb 2 You + Verb 2 She + Verb 2 He + Verb 2 It + Verb 2	I + Did + Not + Verb 1 You + Did + Not + Verb 1 They + Did + Not + Verb 1 You + Did + Not + Verb 1 She + Did + Not + Verb 1 He + Did + Not  + Verb 1 It + Did + Not + Verb 1	Did + I +Verb 1 Did + We + Verb 1 Did + They + Verb 1 Did + You + Verb 1 Did + She + Verb 1 Did + He + Verb 1 Did + It + Verb 1

Example:

1. ( + )   : The train was ten minute late.

    ( - )    : The train was not ten minute late.

    ( ? )    : Was the train ten minute late?

                = Yes. it was.

                = No, it was not

2. ( + )   : I bought a book two days ago.

    ( - )    : I did not buy a book two days ago.

    ( ? )    : Did I buy a book two days ago?

                = Yes, I did

                = No, I did not

Signal time that used in simple past tense:
-   Yesterday
-   Yesterday morning
-   Last Monday
-   An hour ago
-   Two days ago
-   The other day
-   Last night
-   Last year
-   A few minute ago, etc.