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Select the correct verb form to complete the sentence.
When the teacher entered the classroom, the students _________________________ quietly.

The verb "to be" is used in its past progressive form "were" for the plural subject "students," followed by the present participle "sitting." This indicates an ongoing action in the past.

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Progressive

The progressive or continuous aspect is used to denote a temporary action or state that began at a previous time and continues into the present time (or other time of reference). It is expressed using a form of the auxiliary verb to be (conjugated appropriately for tense etc.) together with the present participle (-ing form) of the main verb: I am reading; Were you shouting?; He will be sitting over there.

Certain stative verbs make limited use of progressive aspect. Their nonprogressive forms (simple or nonprogressive perfect constructions) are used in many situations even when expressing a temporary state.

The main types are described below.

  • The copular verb to be does not normally use progressive forms (I am happy, not I am being happy). However its progressive aspect is used in appropriate situations when the verb expresses the passive voice (We are being followed), and when it has the meaning of "behave" or "act as" (You are being very naughty; He's being a pest).
  • The verb to have does not use progressive forms when it expresses possession), broadly understood (I have a brother, not I'm having a brother), but it does use them in its active meanings (I'm having a party; She's having a baby; He was having a problem starting his car). Other verbs expressing a state of possession or similar, such as possess, own, belong and owe, also do not normally use progressive forms.
  • Verbs of mental state, sense perception and similar (know, believe, want, think, see, hear, need, etc.) are generally used without progressive aspect, although some of them can be used in the progressive to imply an ongoing, often temporary situation (I am feeling lonely), or an activity (I am thinking about a problem).
  • Verbs denoting positional state normally do use the progressive if the state is temporary: He is standing in the corner. (Compare permanent state: London stands on the banks of the Thames.)

Perfect Progressive

The perfect and progressive (continuous) aspects can be combined, usually in referring to the completed portion of a continuing action or temporary state: I have been working for eight hours. Here a form of the verb have (denoting the perfect) is used together with been (the past participle of be, denoting the progressive) and the present participle of the main verb.

In the case of the stative verbs, which do not use progressive aspect, the plain perfect form is normally used in place of the perfect progressive: I've been here for half an hour (not I've been being here...).

Simple

"Simple" forms of verbs are those appearing in constructions not marked for either progressive or perfect aspect (I go, I don't go, I went, I will go, etc., but not I'm going or I have gone).

Simple constructions normally denote a single action (perfective aspect), as in Brutus killed Caesar, a repeated action (habitual aspect), as in I go to school, or a relatively permanent state, as in We live in Dallas. They may also denote a temporary state (imperfective aspect), in the case of stative verbs that do not use progressive forms.

Simple Past

The simple past, past simple or past indefinite, sometimes called the preterite, is the basic form of the past tense in Modern English. It is used principally to describe events in the past, although it also has some other uses. Regular English verbs form the simple past in -ed; however there are a few hundred irregular verbs with different forms.

The term "simple" is used to distinguish the syntactical construction whose basic form uses the plain past tense alone, from other past tense constructions which use auxiliaries in combination with participles, such as the past perfect and past progressive.

Formation

Regular verbs form the simple past end*-ed*; however there are a few hundred irregular verbs with different forms. For details see.

Most verbs have a single form of the simple past, independent of the person or number of the subject (there is no addition of -s for the third person singular as in the simple present).

However, the copula verb be has two past tense forms: was for the first and third persons singular, and were in other instances.

The form were can also be used in place of was in conditional clauses and the like; for information on this, see subjunctive.

This is the only case in modern English where a distinction in form is made between the indicative and subjunctive moods in the past tense.

Questions, other clauses requiring inversion, negations with not, and emphatic forms of the simple past use the auxiliary did.

A full list of forms is given below, using the (regular) verb help as an example:

  • Basic simple past:
    • I/you/he/she/it/we/they helped
  • Expanded (emphatic) simple past:
    • I/you/he/she/it/we/they did help
  • Question form:
    • Did I/you/he/she/it/we/they help?
  • Negative:
    • I/you/he/she/it/we/they did not (didn't) help
  • Negative question:
    • Did I/you/he/she/it/we/they not help? / Didn't I/you/he/she/it/we/they help?

Usage

The simple past is used for a single event (or sequence of such events) in the past, and also for past habitual action:

  • He took the money and ran.
  • I visited them every day for a year.

It can also refer to a past state:

  • I knew how to fight even as a child.

For action that was ongoing at the time referred to, the past progressive is generally used instead (e.g. I was cooking). The same can apply to states, if temporary (e.g. the ball was lying on the sidewalk), but some stative verbs do not generally use the progressive aspect at all, and in these cases the simple past is used even for a temporary state:

  • The dog was in its kennel.

However, with verbs of sensing, it is common in such circumstances to use could see in place of saw, could hear in place of heard, etc.

  • I felt cold.

If one action interrupts another, then it is usual for the interrupted (ongoing) action to be expressed with the past progressive, and the action that interrupted it to be in the simple past:

  • Your mother called while you were cooking.

The simple past is often close in meaning to the present perfect.

The simple past is used when the event happened at a particular time in the past, or during a period which ended in the past (i.e. a period that does not last up until the present time).

This time frame may be explicitly stated, or implicit in the context (for example the past tense is often used when describing a sequence of past events).

  • I was born in 1980.
  • We turned the oven off two minutes ago.
  • I came home at 6 o'clock.
  • When did they get married?
  • We wrote two letters this morning.
  • She placed the letter on the table, sighed, and left the house.Contrast these examples with those given at.

Note also that for past actions that occurred before the relevant past time frame, the past perfect is used.

Various compound constructions exist for denoting past habitual action.

The sentence When I was young, I played football every Saturday might alternatively be phrased using used to (... I used to play ...) or using would (... I would play...).

The simple past also has some uses in which it does not refer to a past time.

  • If he walked faster, he would get home earlier.
  • I wish I knew what his name was.

These are generally in condition clauses and some other dependent clauses referring to hypothetical circumstances, as well as certain expressions of wish:

  • He said he wanted to go on the slide.

Past Progressive

The past progressive or past continuous construction combines progressive aspect with past tense, and is formed using the past tense of be (was or were) with the present participle of the main verb.

It indicates an action that was ongoing at the past time being considered:

  • At three o'clock yesterday, I was working in the garden. For stative verbs that do not use the progressive aspect, the simple past is used instead (At three o'clock yesterday we were in the garden).

The past progressive is often used to denote an action that was interrupted by an event, or for two actions taking place in parallel:

  • While I was washing the dishes, I heard a loud noise.
  • While you were washing the dishes, Sue was walking the dog.(Interrupted actions in the past can also sometimes be denoted using the past perfect progressive.)

The past progressive can also be used to refer to past action that occurred over a range of time and is viewed as an ongoing situation:

  • I was working in the garden all day yesterday. That could also be expressed using the simple past, as I worked..., which implies that the action is viewed as a unitary event (although the effective meaning is not very different).

Past Perfect

The past perfect, sometimes called the pluperfect, combines past tense with perfect aspect; it is formed by combining had (the past tense of the auxiliary have) with the past participle of the main verb.

It is used when referring to an event that took place prior to the time frame being considered.

This time frame may be stated explicitly, as a stated time or the time of another past action:

  • We had finished the job by 2 o'clock.
  • He had already left when we arrived.

The time frame may also be understood implicitly from the previous or later context:

  • I was eating ... I had invited Jim to the meal but he was unable to attend. (i.e. I invited him before I started eating)
  • I had lost my way. (i.e. this happened prior to the time of the past events I am describing or am about to describe)

Compare He had left when we arrived (where his leaving preceded our arrival), with the form with the simple past, He left when we arrived (where his leaving was concurrent with or shortly after our arrival).

Note that unlike the present perfect, the past perfect can readily be used with an adverb specifying a past time frame for the occurrence.

For example, while it is incorrect to say I have done it last Friday (the use of last Friday, specifying the past time, would require the simple past rather than the present perfect), there is no such objection to a sentence like "I had done it the previous Friday".

The past perfect can also be used for states or repeated occurrences pertaining over a period up to a time in the past, particularly in stating "for how long" or since when". However, if the state is temporary and the verb can be used in the progressive aspect, the past perfect progressive would normally be used instead. Some examples with the plain past perfect:

  • I had lived in that house for 10 years.
  • The children had been in their room since lunchtime.

Past Perfect Progressive

The past perfect progressive or past perfect continuous (also known as the pluperfect progressive or pluperfect continuous) combines perfect progressive aspect with past tense.

It is formed by combining had (the past tense of auxiliary have), been (the past participle of be), and the present participle of the main verb.

Uses of the past perfect progressive are analogous to those of the present perfect progressive, except that the point of reference is in the past.

For example:

  • I was tired because I had been running.
  • By yesterday morning they had already been working for twelve hours.
  • Among the witnesses was John Smith, who had been staying at the hotel since July 10.

This form is sometimes used for actions in the past that were interrupted by some event (compare the use of the past progressive as given above).

For example:

  • I had been working on my novel when she entered the room to talk to me.

This implies that I stopped working when she came in (or had already stopped a short time before); the plain past progressive (I was working...) would not necessarily carry this implication.

If the verb in question does not use the progressive aspect, then the plain past perfect is used instead.

The past perfect progressive may also have additional specific uses similar to those of the plain past perfect.

Verb

A verb is a word that expresses an action, a state, or an occurrence — and it's the engine of every English sentence. Understanding how verbs work is foundational to everything else in English grammar, from forming questions to building complex sentences.

Verb Forms

Most English verbs have five inflected forms:

  • Base form (go, write, climb) — used as an infinitive, imperative, present subjunctive, and present indicative in all persons except third-person singular.
  • -s form (goes, writes, climbs) — used for the present tense, third-person singular (she writes).
  • Past tense (went, wrote, climbed) — also called the preterite.
  • Past participle (gone, written, climbed) — identical to the past tense for regular verbs, but often different for irregular verbs.
  • -ing form (going, writing, climbing) — serves as the present participle and gerund.

The verb be is a special case with more forms than any other English verb (am, is, are, was, were, been, being). Modal verbs like can, must, and should have fewer forms than typical verbs.

Main Verbs and Auxiliaries

Verbs in English often appear in combinations: one or more auxiliary verbs paired with a main verb.

  • The dog was barking very loudly.
  • My hat has been cleaned.
  • Jane does not really like us.

The first verb in the combination is the finite verb (it carries tense and agrees with the subject). The rest are nonfinite (infinitives or participles). Notice that these verbs don't always sit next to each other — as in does not really like.

Tense, Aspect, and Mood

English expresses tense (time reference), aspect (how an action unfolds over time), and mood (the speaker's attitude toward the action) mostly through verb combinations rather than word endings. That's why you'll encounter labels like "present progressive" or "conditional perfect" — these are specific tense–aspect–mood combinations built with auxiliaries.

Self-check: If you can change the time of a sentence by swapping one word (She runs → She ran), that word is the verb.

Keep Practising

To build your verb skills from the ground up, try these challenges: Basics. "To be" in Present Tense, Basics. Common Uses of Auxiliary Verbs, and Transitive and Intransitive Verbs.

A2 | Elementary | Pre-intermediate

CEFR A2 is the second level in the Common European Framework of Reference for Languages, often called elementary or pre-intermediate. If you're at this stage, you've moved beyond the basics of A1 and can handle simple, real-life communication — but you're still building the foundations you'll need for B1 and beyond.

What can an A2 learner do?

At A2, you can:

  • Understand everyday expressions related to familiar topics — personal details, family, shopping, work, and your local area.
  • Communicate in routine situations that involve a simple, direct exchange of information (e.g. ordering food, asking for directions, making small talk).
  • Describe your background and immediate environment in simple terms — where you live, what you do, what you need.
  • Read and understand short, simple texts like signs, menus, timetables, and brief personal messages.

Key grammar at A2

At this level, you're expected to be comfortable with several core grammar areas:

  • Past simple and past continuous — talking about completed actions and actions in progress in the past.
  • Present perfect — connecting past events to the present (I've visited London twice).
  • Basic modal verbs — expressing ability, permission, necessity, and possibility (can, must, should, have to).
  • Common question forms — both simple and slightly more complex (How long have you lived here?).
  • Articles and determiners — using a/an/the correctly, along with words like some, any, few, little.
  • Basic conditionals — first conditional and simple uses of if and wish.

You're also expanding your vocabulary through collocations (natural word pairings like make a decision or take a break) and learning to use gerunds and infinitives with common verbs.

How A2 differs from A1 and B1

Compared to A1, A2 learners can do more than just produce isolated phrases — you can link simple sentences and participate in short conversations. Compared to B1, you're still relying on familiar contexts and predictable language; handling unexpected topics or expressing opinions in detail comes at the next level.

Self-check: If you can describe your daily routine, talk about past experiences, and handle a basic conversation at a shop or restaurant — but struggle when the topic gets abstract or unfamiliar — you're likely at A2.

Practice at this level

Try these challenges to test and strengthen your A2 skills: Is your English level A2/Pre-intermediate? Test your English CEFR Level!, Basics. Present Perfect., and Basics. Common More Complex Questions..

Difficulty: Easy

Easy difficulty. Difficulty levels represent author's opinion about how hard a question or challenge is.