Affirmative:

Subject + V(past) + Compl.

• Mary worked at the office yesterday
• Luis and peter drank tea one hour ago 

Negative:

Subject + Aux.Verb (did) + Not + Verb + Compl.

• Mary did not work at the office yesterday
• They didn't drink tea one hour ago

Interrogative:

Yes/No Question

Aux.Verb + Subject + V(simple form) + Compl.?

• Did mary work at the office yesterday?

      Yes: -She did

              -She worked at th office yesterday

              

      No: -She didn't

Inf. Question:

W.H. + Aux.Verb + Subject + Verb + Compl.?

• When did Mary work at the office?
• Where did mary work yesterday?
• Who worked at the yesterday?