Mastering 'As' and 'Like': A B2 Grammar Guide for English Learners — B2 English grammar lesson by Langcom

Mastering ‘As’ and ‘Like’: A B2 Grammar Guide for English Learners

Raúl Maguiña

Fondatore di Langcom | Esaminatore per Cambridge e SIELE

Settembre 6, 2026

B2✏️ Grammatica⏱️ 6 min di lettura
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The key difference between as e like is their primary function: as describes the role, job, or purpose of something, while like indicates similarity or comparison. Pensate a as meaning ‘in the role of’ or ‘in the capacity of’, and like meaning ‘similar to’ or ‘in the same way as’. For example, you might work as a doctor (your profession), but you could also say someone looks like a movie star (a comparison). Mastering this distinction is crucial for B2 English learners. It helps you express ideas precisely and avoid common errors. This guide will clarify when to use each word, helping you improve your accuracy for both speaking and writing, and preparing you for exams like the B2 First.

What is ‘Like’ and How Do We Use It?

Like is mainly used as a preposition to show similarity or comparison. It means ‘similar to’ or ‘in the same way as’.

  • Utilizziamo like before a noun, pronoun, or gerund (verb + -ing).
  • It describes how something looks, feels, sounds, or behaves.

È inoltre possibile utilizzare like to introduce examples, similar to such as.

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What is 'As' and How Do We Use It?

As has several important uses. It can be a preposition or a conjunction.

  • As a Preposition: As describes the function, role, or purpose of a person or thing. It means 'in the role of' or 'in the capacity of'.
  • As a Conjunction: As can connect two clauses. It means 'in the way that', 'at the same time that', or 'because'. When used as a conjunction, as is followed by a subject and a verb.

As also appears in many fixed phrases, such as as usual oppure as a result.

When to Use 'Like' or 'As' for Examples?

Entrambi like e such as can introduce examples. They both mean 'for example'.

  • Like is more common in informal speech and writing.
  • Such as is generally more formal and is often preferred in academic or formal contexts.

Verbs Often Followed by 'As'

Some verbs are commonly followed by as to describe how something is seen, known, or used.

  • Common verbs include regard as, treat as, see as, know as, describe as, use as, e accept as.
  • This structure often highlights the function or identity of the object.

The Nuance of 'Like' as a Conjunction (B2 Level)

Traditionally, as (oppure as if / as though) is used as a conjunction before a clause (subject + verb) to mean 'in the way that'.

  • However, in informal spoken English, especially American English, you might hear like used as a conjunction.
  • For formal writing, academic contexts, and exams like B2 First, it is generally safer and more appropriate to use as oppure as if/though when followed by a subject and a verb.
Summary: Key Uses of <span data-no-translation>As</span> vs. <span data-no-translation>Like</span>
Use Case <span data-no-translation>As</span> <span data-no-translation>Like</span>
Role or Function As a teacher, use this as a shield (Not used for this purpose)
Comparison or Similarity (Not used for this purpose) Like a bird, looks like rain
Conjunction (Subject + Verb) Do as I say, As he grew older (Informal: Like he said)
Introducing Examples (Less common, more formal) Fruits like apples (also such as)
Verbs followed by Regard as, treat as (Not for this structure)

Esempi

  • She sings like an angel.
  • My new car drives like a dream.
  • It feels like sleeping on a cloud.
  • I work as a software engineer.
  • We used the old barrel as a planter.
  • Do as I say, not as I do.
  • As the sun set, the sky turned orange.
  • I enjoy sports like tennis and basketball.
  • Many cities, such as London and Paris, are popular tourist destinations.
  • I regard her as a close friend.
  • They treated him as a hero.
  • It looks like it's going to rain. (Informal, common)
  • It looks as if it's going to rain. (More formal)

Esercitazione

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Errori comuni per chi parla spagnolo

Learners often confuse as e like, especially when their native language uses one word for both concepts. Here are some common errors:

  • Utilizzo di like for a job or role:
    I work as a doctor. (Corretto)
    NOT: I work like a doctor. (Incorrect – this means you work in a similar way to a doctor, but it's not your profession.)
  • Utilizzo di like oppure as unnecessarily with verbs of perception:
    The room looked empty. (Corretto)
    NOT: The room looked like empty. (Incorrect – empty is an adjective, not a noun for comparison.)
    The water was crystal clear. (Corretto)
    NOT: The water was as crystal clear. (Incorrect – as is not needed here.)
  • Confusing role (as) with comparison (like):
    As a student, I have a lot of homework. (Correct – I am a student.)
    He acts like a student. (Correct – He is not a student, but behaves similarly.)

Domande frequenti

What is the main difference between 'as' and 'like'?

The main difference is their function: as describes a role, job, or purpose, while like indicates similarity or comparison. Think of as meaning 'in the role of' and like meaning 'similar to'.

Can 'like' be used before a subject and a verb?

Informally, yes, especially in spoken American English. However, for formal writing, academic contexts, and exams, it is generally better to use as oppure as if/though when followed by a subject and a verb.

How is this grammar point relevant for the B2 First exam?

Correctly using as e like is crucial for the B2 First Use of English paper, particularly in tasks like Part 2 (Open Cloze) where you need to choose the precise word, and Part 3 (Word Formation) for understanding context. It also improves the accuracy and clarity of your writing tasks.

When should I use 'such as' instead of 'like'?

Entrambi such as e like can introduce examples. Such as is generally more formal and is preferred in academic or formal writing, while like is more common in everyday conversation.

Informazioni sull'autore: Raúl Maguiña

Raúl Maguiña è il direttore dell’Asociación Educativa Langcom, un centro autorizzato di preparazione all’esame Cambridge English con sede a il tuo Paese. Con oltre un decennio di esperienza nel campo dell'insegnamento delle lingue e delle certificazioni internazionali, ha aiutato migliaia di studenti, insegnanti e istituti scolastici in 25 paesi a ottenere le certificazioni di inglese Cambridge, IELTS, TOEFL e Michigan.

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