The present perfect tense can be used:

• to denote an action or event that happened or started in the past and still has its impact or some connection to the subject in the present;
• to indicate an action that happened in the past and continues to occur in the present;
• to connect the events of the present to the events that happened in the past.

Exercise 1: Use the following verbs and form sentences following the structure of the Present Perfect Tense.

• Work
• Sleep
• Eat