PRESENT:I always go to the shop - simpleI am going to the shop now - continuousI have gone to the shop - perfectI have been going to the shop for months - perfect continuousPAST:I went to the shop yesterday - simpleI was going to the shop at 6pm yesterday - continuousI had gone to the shop before the tv show began - perfectI had been going to the shop for 8 years when I realized that... - perfect continuousFUTURE:I will go to the shop tomorrow - simpleI will be going to the shop tomorrow at 10pm - continuousI will have gone to the shop by 6pm tomorrow - perfectI will have been going to the shop for 8 years tomorrow - perfect continuousFUTURE IN THE PAST:I knew I would go to the shop - simpleI knew I would be going to the shop at 6 am - continuousIf I had known it I would not have gone to the shop - perfectShe told me she would have been going to the shop for 30 years next December. - perfect continuous