Present. I work. ... Present continuous. I am working Simple past. I worked Past continuous. I was working Present perfect. I have worked Present perfect continuous. I have been working Past perfect. I had worked Past perfect continuous. I had been working
Present continuous. I am working
Simple past. I worked
Past continuous. I was working
Present perfect. I have worked
Present perfect continuous. I have been working
Past perfect. I had worked
Past perfect continuous. I had been working