I walked to the shop. However, not all past tenses are written like this as there are exceptions which need to be learned separately. For example: I bent down to pick up a penny. The correct past ...
The past tense is used for things that have already happened. He was sticky. The present tense is used when something is happening now or when something happens regularly. He is sticky.
To establish the difference between the use of ‘has/have’ and that of ‘had’, one needs to understand the essence of the past perfect tense. When two things occurred in the past ...