Lesson 5: Verb Tenses & Time — Understanding When Things Happen

Introduction

Today's tense lesson is not about speaking English fluently — it's about reading it accurately. Books, articles, documentation, and research papers lean on tense constantly to signal something you need to catch: when something happened, whether it's still going on, whether it's finished, and why the author chose that particular form.

Your goal today: look at a verb's form and immediately know when the action happens, how long it lasts, whether it's over, and why the writer reached for that tense.

What Is Tense, Really?

Tense signals time and state

Tense tells you about the time and state of an action or situation.

Sentence	Basic time
People learn.	present / general
People learned.	past
People will learn.	future

All three sentences describe the same idea — learning — but each one places it at a different point in time.

The First Distinction That Matters for Reading

Present tense does not always mean 'right now'

Water boils at 100°C.

Boils here does not mean water is boiling at this exact moment. It states a general fact — something that is always true. Present Simple is very often used for exactly this: a general truth, not a live, in-progress action.

Present Simple

Structure: Subject + base verb

People learn. · People make decisions. · Experience matters. · Research shows that behavior can change.

Present Simple typically covers four jobs:

General truth — People need social interaction.
Habit — People often read books.
Repeated action — She studies every day.
General statement — Human behavior is complex.

Present Simple in Books

A writer's default tense for theory and general observation

Non-fiction authors reach for Present Simple whenever they're stating a theory, a principle, or a general observation.

Human behavior is influenced by many factors. is is Present Simple, because this is a general statement.

People make decisions based on their experiences. Also a general observation — not something happening at this exact second.

Present Continuous

Structure: am/is/are + verb-ing

People are learning.

This usually signals an action in progress right now, or a temporary process.

Habit vs. ongoing process

People learn English. → a general fact or habit.

People are learning English. → learning is actively happening during this current period.

Context Still Matters When Reading a Book

Present Continuous for a large-scale, ongoing change

Society is changing rapidly.

is changing is Present Continuous. It describes society as being in the middle of an ongoing process — a large-scale change actively taking place, not a single instant.

Past Simple

Structure: Subject + past-tense verb

People learned. · He studied psychology. · Researchers examined the data.

Past Simple describes a completed past event.

A finished event in the past

Researchers studied the behavior of participants.

The study happened in the past, and it's finished.

Historical Writing

Past Simple for dated, historical facts

History and background sections lean heavily on Past Simple.

The researchers conducted the experiment in 1975. The experiment is a completed historical event.

The company introduced the product in 2005. Also a completed historical event.

Present Perfect

Structure: have/has + past participle

People have learned from experience. · Researchers have discovered several important patterns. · Society has changed significantly.

The Core Idea of Present Perfect

Present Perfect connects a past event to right now

Compare directly:

Past Simple: Researchers studied the problem. → The study happened in the past, and the sentence stops there.

Present Perfect: Researchers have studied the problem. → The study happened in the past, and its relevance still exists right now.

That connection — past action, present relevance — is the entire point of Present Perfect.

Present Perfect in Non-Fiction

'Past research → current knowledge' is Present Perfect's signature move

Researchers have found that people often rely on mental shortcuts.

The writer is saying: past research is now part of current knowledge — hence Present Perfect.

Scientists have discovered several factors that affect human behavior.

Same pattern: past research feeding directly into present-day understanding.

Past Perfect

Structure: had + past participle

The earlier of two past events

The researchers had completed the study before they published the results.

Two past events here: the study was completed and the results were published. Whichever happened first gets Past Perfect: had completed.

Past
├── Study completed   (had completed — earlier)
└── Results published (published — later)

Past Perfect marks "further back" inside the past.

Future

Basic form: will + base verb

People will continue to learn. · Technology will change society.

This expresses a prediction or expectation.

Future prediction paired with a present reporting verb

Artificial intelligence will change many aspects of work. — a prediction on its own.

Research suggests that AI will change many aspects of work. — here, suggests is a present-tense reporting verb, and will change is the future prediction it introduces. This combination — present reporting verb + future prediction — is extremely common in non-fiction.

A Reading Pattern Worth Memorising

Reporting-verb phrases signal a noun clause is coming

You'll meet these shapes constantly in non-fiction:

Research shows that… · Studies suggest that… · Evidence indicates that… · Researchers have found that…

Research shows that regular practice improves performance.

Core: Research shows… Noun clause (the object of shows): that regular practice improves performance.

Beyond "When": Aspect

English tense isn't only about when something happens — it also signals the action's state, progress, or completion. That extra layer is called aspect, and it comes in four basic patterns.

Aspect	Example	Meaning
Simple	People learn.	general fact or single event
Continuous	People are learning.	ongoing
Perfect	People have learned.	completed, connected to the present
Perfect Continuous	People have been learning.	started in the past, still ongoing

Perfect Continuous

Structure: have/has been + verb-ing

Started in the past, still running now

She has been studying for three hours.

She started three hours ago, and she's still studying now.

Researchers have been studying human behavior for decades.

The research began in the past and has continued, without stopping, across a long stretch of time.

Comparing Four Forms of the Same Verb

One verb, four timelines

People study. — general fact or habit.
People are studying. — currently in progress.
People have studied. — past experience, still relevant now.
People have been studying. — an ongoing activity spanning a period of time.

Seeing these four side by side is one of the fastest ways to make this distinction click.

Modals Add a Tense-Like Meaning of Their Own

Modal verbs sit on top of everything you've just learned, adding a layer of possibility, necessity, or expectation rather than a fixed point in time:

People can learn. — ability or possibility People could learn. — past ability, or a weaker, context-dependent possibility People may learn. — possibility People might learn. — weaker possibility People should learn. — recommendation or expectation People must learn. — necessity

Notice that none of these six sentences commits to a single moment on the timeline the way a plain tense does — a modal is the author telling you how likely, how required, or how expected something is, which is exactly the reading skill the rest of this course keeps returning to.

Passive Voice + Tense

Combine what you learned about passive voice in Lesson 3 with today's tenses, and the verb phrase simply grows by one more piece — always read the whole thing as one unit.

Present: Behavior is influenced by emotions. Past: Behavior was influenced by emotions. Present Perfect: Behavior has been influenced by social factors. Future: Behavior will be influenced by the environment.

Whether it's is influenced, was influenced, has been influenced, or will be influenced — treat the whole phrase as one verb carrying one piece of timeline information.

A Rule Worth Keeping for Every Book You Read

Five questions to ask about any verb form

1When does this happen?

2Is it general, or is it specific to one moment?

3Is it ongoing?

4Is it completed?

5Does it connect past information to the present?

Don't try to recall a Bangla grammar-term for the tense. Answer these five questions instead — they get you straight to the meaning.

Real Example 1

Present Perfect opening, then a relative clause, then a general-truth verb inside a noun clause

Researchers have found that people who regularly practice a skill improve their performance over time.

Researchers have found — Present Perfect: past research feeding into current knowledge.

people who regularly practice a skill — a noun phrase with a relative clause: who regularly practice a skill describes which people.

Inside the noun clause that follows found, the main idea is: people improve their performance over time. Here improve is Present Simple — because this is a general relationship (regular practice → improved performance), not a single event.

Real Example 2

A past discovery about a past, ongoing state

Scientists discovered that people were behaving differently under stressful conditions.

discovered — Past Simple: the discovery itself happened at a specific point in the past.

were behaving — Past Continuous: at that same past time, the behavior was already in progress, ongoing.

Past
├── People were behaving differently   (ongoing, at that time)
└── Scientists discovered this         (the discovery itself)

Tense Changes With Context, Not Just With the Verb's Root

One verb root, six different timelines

People work hard. — general statement. People are working hard. — currently working. People worked hard. — past. People have worked hard. — past experience, still relevant. People had worked hard before the company closed. — an earlier past. People will work hard. — future expectation.

The whole point of learning tense is being able to look at a verb's form and immediately picture its place on this timeline.

Vocabulary in Context

discoververbneutral

to find or learn something for the first time (আবিষ্কার করা)

Often with discover a flaw, discover that, recently discovered

“Auditors discovered that fourteen invoices had been paid twice in the same month.”

findverbneutral

to learn something as a result of study or observation (খুঁজে পাওয়া)

Often with study finds, find that, researchers found

“The survey found that seventy percent of drivers arrived outside their booked time slot.”

examineverbformal

to look at something closely and in detail (পরীক্ষা করা)

Often with examine the evidence, closely examine, examine a claim

“The tribunal will examine the shipping records before ruling on the dispute.”

investigateverbformal

to study something systematically to establish the facts (তদন্ত/অনুসন্ধান করা)

Often with investigate the cause, thoroughly investigate, investigate a complaint

“Engineers are investigating why the gate scanners misread barcodes after rain.”

suggestverbformal

to indicate that something is probably true, without stating it outright (ইঙ্গিত দেওয়া)

Often with research suggests, suggest a link, strongly suggest

“Early findings suggest that predictive maintenance reduces unplanned crane downtime.”

indicateverbformal

to show or point to something (নির্দেশ করা)

Often with indicate a trend, clearly indicate, evidence indicates

“Rising fuel costs indicate that operating margins will remain under pressure this year.”

changeverbneutral

to become different, or to make something different (পরিবর্তন করা/হওয়া)

Often with change significantly, change course, change the way

“Customs procedures have changed considerably since the single-window system was introduced.”

developverbneutral

to grow or advance gradually, or to create something over time (বিকশিত/উন্নত করা)

Often with develop gradually, develop a system, develop into

“The fault developed slowly, and the monitoring system flagged it only after three weeks.”

improveverbneutral

to become better, or to make something better (উন্নত করা)

Often with steadily improve, improve significantly, improve the process

“Crane productivity has improved steadily since the new shift pattern began.”

remainverbformal

to stay in the same state or condition (থেকে যাওয়া/অবশিষ্ট থাকা)

Often with remain unchanged, remain stable, remain a concern

“Despite the upgrade, average truck waiting time remains above two hours.”

Learn these exact reporting-verb patterns

Studies have found that… · Research suggests that… · Evidence indicates that… · Researchers have discovered that…

These four shapes appear constantly in non-fiction English. Recognising the shape instantly is worth more than knowing any single word in isolation.

Guided Reading Practice

Read the paragraph once, slowly, tracking which tense each verb uses and why.

Researchers have studied human decision-making for many years. Early studies focused mainly on the idea that people were rational decision-makers. Later research showed that emotions, habits, and unconscious biases can influence judgment. Today, researchers continue to examine how these factors affect the decisions people make. Future studies may provide a deeper understanding of human behavior.

Sentence 1 — Researchers have studied human decision-making for many years. have studied → Present Perfect: decades of research, still relevant to current knowledge.

Sentence 2 — Early studies focused mainly on the idea that people were rational decision-makers. focused → Past Simple: an early, historical body of research. were → Past Simple: the belief people held at that time.

Sentence 3 — Later research showed that emotions, habits, and unconscious biases can influence judgment. showed → Past Simple: a later historical finding. can influence → modal + base form: a general possibility or capability, not tied to one moment.

Sentence 4 — Today, researchers continue to examine how these factors affect the decisions people make. continue → Present Simple: describing the current, ongoing state of the field.

Sentence 5 — Future studies may provide a deeper understanding of human behavior. may provide → modal: a future possibility.

Golden Rule

Every tense you met today fits on one timeline, and seeing the whole timeline at once is worth more than memorising each tense in isolation:

PAST -------------------- PRESENT -------------------- FUTURE

Past Simple                Present Simple               will
  completed event             general / current            prediction

Past Perfect                Present Perfect
  earlier past                 past → present connection

Past Continuous             Present Continuous
  ongoing in the past          ongoing now

Turn that timeline into a habit by asking four questions of any verb phrase you meet:

Four questions for reading any verb phrase

1Who? (the subject)

2Verb phrase? (read it as one unit, whatever its length)

3Time? (past, present, or future)

4State? (general, ongoing, or completed)

Applying the four questions

Researchers have been studying the problem.

Who? → Researchers Verb phrase? → have been studying Time? → past continuing into present State? → ongoing

Read this way, grammar stops feeling like a separate subject bolted onto the sentence — it becomes part of the meaning itself.

Golden Rule

Don't just name a tense — ask when it happens, whether it's ongoing or finished, and whether it connects the past to right now. Those four answers are the meaning.

Lesson Summary

Today you learned that Present Simple often signals a general truth rather than "right now," and that Present Perfect exists specifically to connect a past event to present relevance — the reason non-fiction writers switch between Past Simple and Present Perfect so often. You met all four aspects — simple, continuous, perfect, and perfect continuous — and practised reading a full verb phrase, active or passive, modal or plain, as one timeline signal. From here on, every verb you meet while reading is a small amount of free information about when, how long, and whether something is finished — as long as you stop to read its full form.

Practice: Test What You've Learned

Work through every question yourself before checking anything.

Before you start

Do not use Google Translate or any other translation tool for these questions. Naming the wrong tense out loud is exactly how you find out which timeline distinction still needs work.

Part A — Identify the Tense and Meaning

People learn from experience.
Show answer
Present Simple, expressing a general truth rather than something happening right now.
People are learning new skills.
Show answer
Present Continuous, describing an action actively in progress during the current period.
Researchers studied the problem.
Show answer
Past Simple, describing a completed event that is finished, with no stated connection to now.
Researchers have studied the problem.
Show answer
Present Perfect, showing that past research is still relevant to current knowledge.
Researchers had studied the problem before the new experiment began.
Show answer
Past Perfect, marking the earlier of two past events — the studying happened before the new experiment began.
Researchers have been studying the problem for many years.
Show answer
Present Perfect Continuous, showing an activity that started in the past and has continued without stopping up to now.

Part B — Explain the Difference

People learn English. — versus — People are learning English.
Show answer
People learn English states a general fact or habit, with no sense of it happening at this moment. People are learning English describes an action actively in progress during the current period.
Researchers studied the problem. — versus — Researchers have studied the problem.
Show answer
Researchers studied the problem describes a finished past event with no stated link to now. Researchers have studied the problem connects that same past work to present-day relevance or knowledge.

Part C — Find the Verb Phrase

Human behavior can be influenced by many factors.
Show answer
Verb phrase: can be influenced — a modal plus passive form, treated as one unit.
Researchers have been studying human decision-making for decades.
Show answer
Verb phrase: have been studying — Present Perfect Continuous, one four-part unit.
The results may have changed our understanding of the problem.
Show answer
Verb phrase: may have changed — a modal combined with the perfect form, read as one unit.

Part D — Reading

Explain the meaning of this sentence in your own, simple English: Researchers have found that people who regularly practice a skill can improve their performance significantly over time.
Show answer
Studies have discovered that when someone practices a skill on a regular basis, their performance gets noticeably better as time passes.

Part E — Create

Write one Present Simple sentence.
Show answer
Model answer: Birds migrate south in winter. This states a general, recurring fact.
Write one Present Continuous sentence.
Show answer
Model answer: The team is preparing for the presentation. This describes an action currently in progress.
Write one Present Perfect sentence.
Show answer
Model answer: She has completed the project. This connects a finished past action to its present relevance.
Write one Past Simple sentence.
Show answer
Model answer: He visited Paris last year. This describes a completed event in the past.
Write one Future sentence.
Show answer
Model answer: The company will launch a new product next month. This expresses a prediction about the future.

Next: Lesson 6 — Articles: "a, an, the" — and why they matter more for meaning in a book than most learners expect.