Basics. Verb Forms: Be/Have/Do and Regular/Irregular Verbs.

Verb Forms: Be/Have/Do and Regular/Irregular Verbs

Explanation and Examples

Verb forms are the different ways verbs change to show tense, voice, mood, or other grammatical features. In English, there are regular and irregular verbs.

Regular verbs: These verbs follow a consistent pattern when changing forms, usually by adding -ed for past simple and past participle forms.
Irregular verbs: These verbs have unique forms for past simple and past participle that do not follow the regular pattern.

The verbs "be," "have," and "do" are essential because they are used as auxiliary verbs and have irregular forms in the past tense.

Regular and Irregular Verb Forms

Regular verbs follow a pattern when forming their past simple and past participle forms, usually by adding -ed.

Example:

Base Form	Past Simple	Past Participle
work	worked	worked

Irregular verbs have unique forms for past simple and past participle that do not follow the regular pattern.

Examples:

Base Form	Past Simple	Past Participle
be	was/were	been
have	had	had
do	did	done

Common Irregular Verbs

Here is a table of some common irregular verbs with their past simple and past participle forms:

Base Form	Past Simple	Past Participle
go	went	gone
write	wrote	written
sing	sang	sung
swim	swam	swum
bring	brought	brought
buy	bought	bought
catch	caught	caught
come	came	come

Back View Answers Start

Present tense

I work here. — simple present (habit/permanent)
I am working now. — present progressive (happening right now)
I have lived here for 10 years. — present perfect (started past, still true)
I have been waiting for an hour. — present perfect progressive (duration up to now)

Four present tense forms: simple (habits/facts), progressive (now/temporary), perfect (past → present relevance), perfect progressive (ongoing duration). Each encodes a different relationship between the action and the present moment.

Trap: "I am living here for 10 years" ❌ — started in the past + still true = present PERFECT (have lived/have been living), not progressive.

Simple tense

✅ I go to work every day. — present simple (habit)
✅ She went home yesterday. — past simple (completed action)
✅ I will call you later. — future simple (promise/decision)
✅ Water boils at 100°C. — present simple (general truth)

The simple aspect is the default, unmarked verb form. Present simple = habits, facts, schedules. Past simple = completed actions. Future simple = predictions, promises, decisions. No auxiliary needed (except will for future and do for questions/negatives).

Rule: if the action is a fact, habit, completed event, or scheduled future — and you don't need to emphasise it being in-progress or connected to now → simple tense.

Perfect tense

✅ I have lived here for ten years. — present perfect (started past, still true)
❌ I live here for ten years. — wrong (simple present can't bridge past→now)
✅ She had finished before I arrived. — past perfect (earlier past)
✅ They will have left by noon. — future perfect (completed before future point)

The perfect = have + past participle. Connects an action to a reference point in time. Present perfect bridges past→now. Past perfect marks "earlier past." Future perfect marks "done before a future deadline."

Rule: if the action started in the past and is still relevant now → present perfect (have done). If two past events and you need the earlier one → past perfect (had done).

Passive voice

✅ The meal was cooked by the chef. — passive (action matters)
✅ Mistakes were made. — passive, agent hidden (evasive)
✅ Active: The chef cooked the meal. — stronger, clearer
❌ The report was being been written. — malformed passive

The passive = be + past participle. Object becomes subject. Use it when the doer is unknown, irrelevant, or obvious. Avoid when it hides responsibility or weakens prose.

Formula: find the active object → make it the subject → use be (matching tense) + past participle → optionally add by + agent.

Participle

✅ a broken window — past participle as adjective
✅ the running water — present participle as adjective
✅ I have eaten. — past participle in perfect tense
✅ She is sleeping. — present participle in progressive tense
❌ I have went. — wrong (past tense, not past participle: use gone)

A participle is a verb form that also works as an adjective. Present (-ing): running, sleeping. Past (-ed or irregular): broken, written, gone. Used in progressive tenses, perfect tenses, passive voice, and as modifiers.

Trap: don't confuse past tense (went) with past participle (gone). After have/has/had → always past participle.

Irregular verb

✅ go → went → gone — ❌ goed / goed
✅ eat → ate → eaten — ❌ eated / eated
✅ put → put → put — all three forms identical
✅ cut → cut → cut — no change group

Irregular verbs don't add -ed for past tense — they change form unpredictably. About 200 common English verbs are irregular, and they include the most frequently used verbs (be, have, go, do, say, make, take).

Pattern: no rule covers all of them. Some rhyme (sing/sang/sung, ring/rang/rung), some don't change (put/put/put), some are unique (go/went/gone). Memorisation is the only path.

Finite verb

✅ She goes to work. — finite (marked for tense + agrees with subject)
Going to work — non-finite (gerund, no tense marking)
To go to work — non-finite (infinitive)
❌ She going to work. — missing finite verb (fragment)

A finite verb carries tense and agrees with its subject. Non-finite forms (infinitives, gerunds, participles) don't. Every complete clause requires at least one finite verb.

Test: can you change the tense? Goes → went → finite. Going → ??? → non-finite. If your sentence has no finite verb, it's a fragment.

Morphology

un- + believe + -able = unbelievable (prefix + root + suffix)
re- + write = rewrite (prefix changes meaning: "again")
kind + -ness = kindness (suffix changes word class: adjective → noun)
mis- + interpret + -ation = misinterpretation (3 morphemes)

Morphology = how words are built from parts: roots (core meaning), prefixes (before: un-, re-, mis-, pre-), suffixes (after: -tion, -able, -ly, -ness). Knowing common affixes lets you decode unfamiliar words.

Pattern: prefixes usually change meaning (happy → unhappy). Suffixes usually change word class (happy → happiness, adjective → noun).

English Grammar Basics

She is a teacher. — verb be + noun complement
He runs every day. — present simple, third-person -s
They don't like coffee. — negation with do-support
I have two cats. — possession, countable noun, no article before plurals

These sentences demonstrate English Grammar Basics — the foundational patterns every other topic builds on: parts of speech, basic tenses, articles, and simple sentence structure.

If you can identify the verb, the subject, and count the noun correctly, you've nailed the basics that make everything else click.

A1 | Elementary | Beginners

✅ My name is Anna. — present simple of be
✅ Where is the station? — basic *wh-*question
✅ I have two brothers. — possession with have
✅ She likes coffee. — third-person -s

These are A1 sentences — the starting level of the CEFR framework. At A1 you can introduce yourself, ask and answer simple personal questions, and handle basic everyday transactions using present tense, be/have/do, and core vocabulary.

If you can say these but freeze at normal speaking speed, you're solidly A1 — and that's exactly where to start.

A2 | Elementary | Pre-intermediate

✅ I went to the cinema yesterday. — past simple
✅ I have visited Paris twice. — present perfect (life experience)
✅ If it rains, I'll take an umbrella. — first conditional
✅ You should see a doctor. — modal for advice

These patterns are A2 — the second CEFR level. At A2 you move past survival phrases into real grammar: past tenses, the present perfect, basic conditionals, and modals for advice/obligation.

Marker: if you can describe yesterday and give simple advice, but struggle with abstractions or nuance, you're at A2.

B1 | Intermediate

✅ If I had more time, I would travel more. — second conditional
✅ The bridge was built in 1920. — passive voice
✅ She said she was tired. — reported speech with backshift
✅ Although it rained, we enjoyed the trip. — complex sentence with concession

These are B1 patterns — the CEFR intermediate level. At B1 you link ideas, use passive voice, handle reported speech, and manage second conditional — enough for travel, work basics, and everyday independence.

Marker: if you can explain why something happened and follow a news story, you're B1.

Easy

She is a teacher. — one verb form, one rule
I have two cats. — basic possession, short sentence
He doesn't like coffee. — simple negation with do-support
Only one answer is clearly correct; distractors are obviously wrong.

Easy marks beginner-level challenges: A1–early A2, one rule at a time, everyday vocabulary, no trick questions.

Use "Easy" when you want to build confidence on a specific rule without interference from other grammar or tricky contexts.