What Is Tense?

Every verb in English does two jobs at once. It names an action or state (we covered that in the last topic) and it places that action in time — past, present, or future. The grammatical machinery that places a verb in time is called tense.

This is the opening lesson of the Tenses topic. Six more follow, each covering one major tense family. This lesson sets up the system so the rest of the topic makes sense: what tense is, how English's 12 tenses are organised, and why a single English verb can express far more about time than just when something happened.

Time vs aspect — the two axes of tense

English tense is built from two ideas. Most students learn only one of them and stay confused for years.

Time — when the action happens. There are three:

• Past — before now
• Present — now
• Future — after now

Aspect — how the action is happening in that time. There are four:

• Simple — the action as a single event (she walks, she walked, she will walk)
• Continuous — the action in progress (she is walking, she was walking, she will be walking)
• Perfect — the action completed in relation to a reference point (she has walked, she had walked, she will have walked)
• Perfect continuous — the action ongoing and accumulating in relation to a reference point (she has been walking, she had been walking, she will have been walking)

Multiply three times by four and you get the twelve tenses of English.

The twelve tenses — a master table

This is the entire tense system. Every English sentence with a verb uses one of these twelve. The next five lessons go through them family by family — simple in Lesson 2, continuous in Lesson 3, perfect in Lesson 4, perfect continuous in Lesson 5.

What aspect actually does

A simple example shows how aspect changes meaning. Take the verb walk in the past and shift only the aspect.

• She walked to school. (simple past) — a complete action; she walked, finished.
• She was walking to school. (past continuous) — the action was in progress at some past moment; we do not know if she finished.
• She had walked to school. (past perfect) — the walking was completed before another past event.
• She had been walking to school. (past perfect continuous) — the walking had been ongoing and accumulating up to another past event.

All four are past. The aspect tells you something different about how the past action is being viewed.

This is why English has twelve tenses and not just three. The three-time system (past, present, future) handles when. The four-aspect system handles how.

How tenses are built — auxiliaries + main verb forms

From the Verbs topic, recall that every verb has five forms. Tenses are built by combining the main verb's form with auxiliary verbs.

Notice the patterns:

• Continuous tenses always use be + -ing
• Perfect tenses always use have + past participle
• Perfect continuous tenses use have + been + -ing
• Future tenses always use will

Once you see the pattern, the twelve tenses stop looking like twelve separate things and start looking like a small set of building blocks combined in different ways.

Why tense matters in WAEC

Tense is one of the most heavily tested grammar areas in WAEC English. Three reasons:

1. Every sentence has tense. Unlike topics that apply only sometimes (like phrasal verbs or specific punctuation), tense is in every sentence you write. Errors compound across an essay.
2. The rules are precise. A wrong tense is usually clearly wrong. Yesterday I am going to Bo is wrong in any context. I have went is wrong every time.
3. Aspect carries meaning. Picking the right tense — not just any tense, but the one that fits what you mean — is what separates a strong essay from a weak one. I have lived in Bo for ten years (still living there) is very different from I lived in Bo for ten years (moved away).

A quick tour of what each family does

The next five lessons will go deep into each. This is the snapshot.

Simple tenses describe actions as complete events. Habits and general truths in the present. Single completed actions in the past. Predictions or decisions in the future. Aminata walks to school. Aminata walked yesterday. Aminata will walk tomorrow.

Continuous tenses describe actions in progress at a particular moment. Aminata is walking. Aminata was walking. Aminata will be walking. The action is unfinished at the reference time.

Perfect tenses describe actions completed in relation to a reference point. Aminata has walked — completed by now. Aminata had walked — completed by some past point. Aminata will have walked — completed by some future point.

Perfect continuous tenses describe actions that have been ongoing and accumulating up to a reference point. Aminata has been walking for an hour — for one hour now, still going. Aminata had been walking when the rain started — accumulated walking up to a past moment. Aminata will have been walking for an hour by noon — accumulated walking up to a future point.

What this topic does NOT cover

Three topics that are tense-adjacent live in their own places on the syllabus:

• Active and Passive Voice — Topic 6. Voice changes who does and who receives the action; it is independent of tense (you can have any tense in active or passive). The letter was written by Aminata (simple past passive) vs Aminata wrote the letter (simple past active).
• Modal Verbs — Topic 16. Can, could, may, might, must, should and the rest. Modals have meaning but are not tenses in the strict sense.
• Conditionals — Topic 17. If sentences have their own tense rules (zero, first, second, third conditional) that build on the tenses we cover here.

We will refer back to this Tenses topic from each of those later topics. The foundation is here.

What's next

In the next lesson we look at the simple tenses — past, present, and future. These are the most common tenses in English, used for habits, general truths, single completed actions, and direct predictions. We will cover their forms, their uses, the spelling and irregularity rules from the Verbs topic that carry through, and the most-tested errors in WAEC objectives.