Modal Verb

English has the modal verbs can, could, may, might, must, shall, should, will, would, and also (depending on classification adopted) ought (to), dare, need, had (better), used (to). These do not add -s for the third-person singular, and they do not form infinitives or participles; the only inflection they undergo is that to a certain extent could, might, should and would function as preterites (past tenses) of can, may, shall and will respectively.

A modal verb can serve as the finite verb introducing a verb catena, as in "he might have been injured then". These generally express some form of modality (possibility, obligation, etc.), although will and would (and sometimes shall and should) can serve – among their other uses – to express future time reference and conditional mood.

Comparative and Superlative

Some adjectives are comparable. For example, a person may be polite, but another person may be more polite, and a third person may be the most polite of the three.

The word more here modifies the adjective polite to indicate a comparison is being made, and most modifies the adjective to indicate an absolute comparison (a superlative).

In English, many adjectives can take the suffixes -er and -est (sometimes requiring additional letters before the suffix; see forms for far below) to indicate the comparative and superlative forms, respectively:

• great, greater, greatest
• *deep, deeper, *deepest*

Some adjectives are irregular in this sense:

• good, better, best
• bad, worse, worst
• many, more, most (sometimes regarded as an adverb or determiner)
• little, less, least

Some adjectives can have both regular and irregular variations:

• old, older, oldest
• far, farther, farthest

also

• old, elder, eldest
• far, further, furthest

Another way to convey comparison is by incorporating the words more and most. There is no simple rule to decide which means is correct for any given adjective, however.

The general tendency is for simpler adjectives, and those from Anglo-Saxon to take the suffixes, while longer adjectives and those from French, Latin, Greek do not—but sometimes sound of the word is the deciding factor.

Many adjectives do not naturally lend themselves to comparison. For example, some English speakers would argue that it does not make sense to say that one thing is more ultimate than another, or that something is most ultimate, since the word ultimate is already absolute in its semantics. Such adjectives are called non-comparable or absolute.

Nevertheless, native speakers will frequently play with the raised forms of adjectives of this sort.

Although pregnant is logically non-comparable (either one is pregnant or not), one may hear a sentence like She looks more and more pregnant each day. Likewise extinct and equal appear to be non-comparable, but one might say that a language about which nothing is known is more extinct than a well-documented language with surviving literature but no speakers, while George Orwell wrote All animals are equal, but some animals are more equal than others.

These cases may be viewed as evidence that the base forms of these adjectives are not as absolute in their semantics as is usually thought. Comparative and superlative forms are also occasionally used for other purposes than comparison.

In English comparatives can be used to suggest that a statement is only tentative or tendential: one might say John is more the shy-and-retiring type, where the comparative more is not really comparing him with other people or with other impressions of him, but rather, could be substituting for on the whole.

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.

B1 | Intermediate

B1 is the intermediate level of the Common European Framework of Reference for Languages (CEFR). It marks the point where you move beyond survival English and start expressing yourself with real independence — describing experiences, explaining opinions, and handling everyday situations without a script.

What a B1 user can do

At this level, you're expected to:

• Understand the main points of clear, standard speech and writing on familiar topics — work, school, travel, hobbies.
• Handle most travel situations in English-speaking environments.
• Produce simple connected text on topics you know or care about.
• Describe experiences, events, hopes, and plans, and give brief reasons and explanations for your opinions.
• Communicate in routine tasks that require a straightforward exchange of information.

What B1 grammar looks like

B1 is where grammar starts to get more layered. You're not just forming basic sentences anymore — you're combining ideas, using different tenses with more precision, and starting to handle structures like the passive voice, modal verbs for necessity and possibility, and gerunds vs. infinitives. You're also expected to build complex sentences with linking words and dependent clauses.

Typical B1 grammar areas include:

• Future tenses — distinguishing will, going to, and the present continuous for future plans
• Passive voice — The report was written yesterday.
• Modal verbs — You should apply early. / She might be late.
• Used to — I used to live in Berlin.
• Verb patterns — knowing whether a verb takes a gerund, an infinitive, or both (I enjoy reading vs. I decided to leave)

What B1 doesn't mean

B1 speakers still hesitate, make grammatical errors, and sometimes struggle with less familiar topics. That's normal. The key difference from A2 is that you can keep a conversation going and get your point across even when things aren't perfect. The step up to B2 involves handling more abstract topics, understanding nuance, and producing more complex, accurate language.

Self-check: Can you tell a friend about a recent trip — what happened, what you liked, and what you'd do differently — without switching to your native language? If yes, you're likely operating at B1 or above.

Ready to find out where you stand? Try Are you B1/Intermediate? Test your English CEFR Level to figure out!, then build your skills with challenges like Basics. Passive Voice, Basics. Modal verbs, and Used to.

Difficulty: Medium

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