In grammar, tense is a category that expresses time. Tenses generally express time relative to the moment of speaking. Tenses are usually manifested by the use of specific forms of verbs.
He speaks in the present tense of the verb “to speak.”
He spoke in the past tense.
He has spoken in the present perfect tense.
He had spoken in the past perfect tense.
At times it is difficult to remember where to use which form of tense. By keeping in mind a few rules, it will become easier for us to use tenses correctly.
Eg. I visit my uncle every Friday.
Facts that are believed to be true.
Eg. Cats hate mice.
Generalizations
Eg. The sun rises in the morning.
Scheduled events in the near future
Eg. The plane takes off at 10 o’clock tonight
Rule: Verb’s 1st form (for plural subject) / verb’s 1st form+ s/es (for singular subject)
Action that takes place now / at the moment
Eg. I am working on my computer
Near future
Eg. I am leaving tomorrow
Rule: is/am/are + verb’s first form +ing
To talk about experiences
Eg. I have been to Italy.
Past action that has the result in the present.
Eg. She has read that book.
The action started in the past and continued up to now.
Eg. I have lived in this town for 12 years.
Rule: Has (Singular subject)/ Have (plural subject) + verb’s third form.
Present Perfect Continuous:
To show that something started in the past and has continued up until now.
Eg. He has been sleeping for the last 3 hours
To talk about an action that started in the past and stopped recently.
Eg. The grass is wet because it has been raining all day long.
To talk about an action that started in the past and is continuing now.
Eg. I have been watching TV for 2 hours / since you left.
Rule: Has(Singular subject)/ Have(plural subject) + been + verb’s ing form.
Completed action in the past.
Eg. She left yesterday.
To talk about an action that started in the past and stopped recently.
Eg. She woke up, had a shower, and left.
To talk about an action that started in the past and is continuing now.
Eg. If I had a million-dollar, I would help the poor.
The action takes place in the middle of another action.
Eg. She was playing when the accident occurred.
Rule: Verb’s 2nd form
Actions happening at the same time in the past.
Eg. He was reading a newspaper while his wife was preparing dinner.
Interrupted action in the past.
Eg. She was reading a book when the light went off, had a shower, and left.
Rule: Was (singular subject) / were (plural subject)+ verb’s 1st form +ing
Past Perfect:Completed action before another action in the past.
Eg. She had left when I arrived.
Rule: Had + verb’s third form.
To show that something started in the past and continued up until another action stopped it.
Eg. They had been playing soccer when the accident occurred
To show that something started in the past and continued up until another time in the past.
Eg. I had been living in that town for ten years before I moved to New York.
We use the Past Perfect Continuous before another action in the past to show cause and effect.
Eg. I was so tired. I had been working for 6 hours.
Rule: Had + been + verb’s 1st form + ing.
Instant decisions
Eg. I’ve left the door open; I’ll close it.
We use the simple future when we predict a future situation.
Eg. She’ll pass the exam. She’s hardworking.
We use the simple future with: “I (don’t) think…”, “I expect…”, “I am sure…”, “I wonder…”, “probably”.
Conditional sentence type one
Eg. If I have enough time, I’ll watch the film.
Rule: Will/Shall + verb’s 1st form
Action that will be taking place at some time in the future.
Eg. When you arrive, I’ll be sleeping.
Rule: Will/Shall + be + verb’s first form+ ing.
Eg. By tomorrow, I will have finished the work.
Rule: Will/Shall + verb’s third form.
It is used to show that an action will continue up until a particular event or time in the future.
Eg. She will have been working for over 8 hours by the time her children arrive.
Rule: Will/Shall + have + been + verb’s ing form.