‘worked’ is a past simple tense verb, which is used to describe a completed action that occurred in the past. Generally speaking, a past simple verb is formed by adding -ed to the base form of the verb (e.g. work – worked, play – played, etc.).
1. She worked for the company for five years.
2. He worked hard to get his degree.
3. We worked together on the project.
common mistake to avoid when using the past simple verb ‘worked’ is incorrectly spelling the verb (e.g. workd instead of worked). In addition, it is also important to bear in mind that the verb is still conjugated when used in the context of a question or negative sentence (e.g. Did you work? / She did not work yesterday, etc.).