Tense is forms of the verb changes that shows the time of the action or state in grammar. They are 16 tenses in the English. But, for now I want to explain about “Present progressive Tense and Past Progressive tense”.
Present progressive tense can be also called Present Continuous Tense is form of time that use to explain an action, condition, or event that is in progress at the moment of speaking. It has the pattern “S+to be (is, am, are)+verb –ing” and also it has some “time signals” such as; now, at present, right now, at this moment, this morning, this afternoon, this evening, nowdays, today, tonight, soon, etc. For example : I am writing a text right now. Moreover, if we use “to be” we must look the subject, if the subject “I” we must use to be “am”, if the subject “They” we must use to be “are” and if the subject “He, she, it” we must use to be “is”.
Past Progressive Tense can also called Past Continuous Tense is form of time that use to explain an action, condition, or event that is in progress in the past time when the other action occurred. It has the pattern “S+to be(was/were) +verb –ing” and also it has some “time signal” such as: When, while, as, all day yesterday, yesterday, last afternoon, at that time, at this time yesterday, at nine o’clock last night, etc. for example: I was writing a text when my mother called me. Moreover, if we use “to be” we must look to the subject, if the subject “I, he, she, it” we must use to be “was” and if the subject “you, we, they” we must use to be “were”.
The are similarities and differences on both Present Progressive Tense and Past Progressive Tense. Their similarities are Present Progressive Tense use verb –ing as do Past Progressive Tense and they also use to be.
And their differences are located in to be and time signal. Present Progressive’s to be are: “is, am, are” whereas Past Progressive’s to be are “was and were”. Moreover their time signals are very different, as we know it is caused by time while we are speaking and the action that happened.
From the explanation above, I personally believe that we all can study it easily because we have already known the similarities and differences about it. And also we can use the tenses above in our activity everyday.