Definition : Tenses are the changes of verb-forms according to the changes of time Examples : 1. Everyday she goes to her office by car 2. Yesterday she went to her office by bus, because her car broke 3. Tomorrow she will go to her office by bus again. Her car is still out of order There are three SIMPLE TENSES in English : I = The Past Tense II = The Present Tense III = The Future Tense Each of them can be classified into : a. Simple b. Continuous c. Perfect d. Perfect Continuous Example :