K12- SEQUENCE OF TENSES

s + _________________   WHEN       QKĐ (V2/ed)

      Hành động đang diễn ra                         Hành động đột ngột

S + _____________  SINCE S + QKĐ (V2/ed)

WHILE  _______________________  QKĐ (V2/ed)

                Hành động đang diễn ra           Hành động đột ngột

BEFORE/ BY THE TIME __________  QKHT (had + V3/ed)

                        Hành động xảy ra sau            Hành động xảy ra trước

AFTER _______________  QKĐ (V2/ed)

          Hành động xảy ra trước      Hành động xảy ra sau                                        

Quyen _______ in the supermarket when she saw her old friend.

• was shopping

• shops

• is shopping

• has shopped

_______, I will give you a call.

• When I had arrived in Ha Noi

• When I arrive in Ha Noi

• When I arrived in Ha Noi

• When I was arriving in Ha Noi

She will take management training course _______

• right after the epidemic has been controlled

• as soon as the epidemic was controlled

• when the epidemic had been controlled

• until the epidemic will be controlled

     He will take the dog out for a walk ________________.

• as soon as he finishes

• until I finished dinner

• when I was finishing dinner

• shall have finished

I will come and see you before I________for America.

• leave  

• will leave

• have left

• left