Sentence structure: focus on verbs

Sentence structure: focus on verbs

Verbs! What would we do without them? Nothing much actually... We need them to explain almost everything! Learn how to use verbs in academic English.

We know that verbs need to go in a sentence and that they have to agree with the subject of a clause in English. We can even gets lists of the most commonly used ones like you can see above and aim to use these more often. But what else is important to know about using verbs in academic English? 

When should I use a verb?

In formal or academic English, you need to use one main verb phrase in every clause in English. This will come directly after the subject in most clauses, because English is what's called a 'subject-dominant' language. Read more about this in the previous blog post on sentence structure.

You can also use verbs before and after this main verb i.e. in subject position or after the main verb, but these verbs have to be tense-less. What does that mean? It means you can use a participle form (e.g. verb-ing or verb-ed) or an infinitive form but not something that could act as a main verb phrase. See the table below for detail or watch the blog video on sentence structure

Subject Predicate
Main verb phrase Object / Complement / Extra information
  • Noun phrase or pronoun
  • Verb with no tense (verb-ing / to verb)
  • 'It' / 'There'
  • 'That' clause (that + subject + predicate)
  • Noun clause (question word + subject + predicate)
Verb phrase with tense (must 'agree' with the subject)
  • Verb with no tense (verb-ing/to verb/verb-ed)
  • Preposition phrase
  • Adjective phrase
  • Noun phrase or pronoun
  • Adverb
  • Noun clause

What exactly does main verb phrase refer to?

The main verb phrase of a clause will have one main verb that tells us the meaning and maybe other verbs that give it tense, aspect, voice, or mood. What are those? Wait until later in the post! 

How do I know what to put after a main verb?

You're right to ask - there are a lot of choices. You can have a noun phrase, an adjective phrase, an adverb, a preposition phrase, or a noun clause. What you choose depends on a few things.

Firstly, some verbs require something with them so you need to include that. For example, I can say I walk but I can't say I want because usually the verb 'want' needs something else with it; in other words, we need to know what somebody wants, not just the verb by itself. So for that verb, I would need to add more, for instance I want to do well or I want food. 

Secondly, verbs follow certain patterns. This means some verbs take an object while others don't take any object or that some verbs are only used for describing nouns, for example. Knowing these types of verbs can help you when you're checking your writing or speaking. Below are the terms that are commonly used with some examples. Do you understand how to use the three types?

Verb type 1: Action verbs ('dynamic' verbs)
What does it do? Verb type information Example
Shows action or possession Intransitive (does not take an object)

Governments need to support people.

However, people also have a responsibility to improve themselves.

They gave the donated food to the shelter.

Transitive (takes one object)
Distransitive (takes two objects)
Verb type 2: Linking verbs

Academic English has a high proportion of linking verbs, because we use a lot of description and reasoning, but you should be using all the types. Are you using them all in your writing and speaking? 

What does it do? Verb type information Example
Links a subject with a noun or adjective by renaming it or with an explanation about what it is

Example: be/appear/seam/become/look/remain*)

*These can often act as action verbs too, it depends on the context)

People appear to be helpful in Melbourne. 

It is important for people to be kind

Some governments around the world seem very different from past governments.

Verb type 3: Helping verbs ('state' verbs*)
What does it do? Verb type information Example

explains a state of existence or functions like permission/ability/possibility/probablility

*Note: These cannot be main verbs alone!

Auxilary (be, do, have)*

*These also help do other things like form tense and questions and add emphasis

People should support other people in their community.

Pollution can be solved by dealing with two main issues: recycling and the supply chain.

There has always been a need to develop technology in better ways. 

Do they have to do that?

It is impossible to predict the issues that this may cause in future.

Is there a solution?

Modal (can, could, may, might, should, must, will, would, shall)
Semi-modals (dare, need, out to, used to)

As you learn more words, you'll get a feeling for what verbs should have with them. When you're not sure, check a good learner's dictionary, like the one at the top right of this page. They will tell you what type of verb your verb is and what it needs with it, if anything. 

There are a couple of other things to keep in mind about verbs. Sometimes they will need other words with them because they're phrasal verbs or collocations. 

Phrasal verbs (multi-part verbs)

Verbs might be phrasal verbs, or multi-part verbs. Although these are less frequently used in academic English, they are extremely common in spoken English. If you're using a multi-part verb or listening to one, you'll need to know which preposition/s go with the verb and what the different meanings are. This is because multi-part verbs often have more than one meaning, and often at least one of these is literal and another is idiomatic. This means the words have a different meaning to what you'd expect. In the example below you can see two idiomatic meanings - 'carried out' has nothing to do with 'carrying' and it means done, and 'put down' means euthanised and you don't 'put' anything anywhere and nothing goes 'down'. 

You'll also need to know the structure these verbs require - as you see below, some phrasal verbs can have the object in different positions. For a list of more academic phrasal verbs, look at this Cambridge blog page

  Subject Main verb phrase Object / Complement / Extra information
Example 1 Scientists carried the research out over a period of five years
Example 2 Scientists carried out the research over a period of five years
Example 3 The sick animal was put down.
Example 4 A doctor put the animal down.


Another important consideration is that some verbs have collocates. This means there is another word or words often used with the verb. Collocations are important and frequent in English, so observe them and use them. When you're not sure, check a source like a collocation dictionary (see example search result below) or a website like Word and Phrase info explained at the bottom of this previous blog post on learning academic vocabulary on learning academic vocabulary. Good quality dictionaries will also tell you collocates.

Example search result from the Online Oxford Collocation Dictionary

analyse (verb)

ADV. carefully, critically, fully, in depth/detail, painstakingly, scientifically, systematically
The results must be analysed in detail.

VERB + ANALYSE attempt to, try to, be difficult to, be impossible to
The precise reasons for the disaster are difficult to analyse.

You can practise collocations by looking a list like the Pearson Academic Collocation list, at websites with exam skills practice like DC IELTS, or at websites like this 'italki' one, which has a collection of commonly used collocations. Using these well means you can get higher marks for vocabulary use in English exams because they are more complex to use and show a deeper understanding of language. The example below has one collocation from the Oxford dictionary and two from the italki website list.  

Subordinator Subject Main verb phrase Object / Complement / Extra information
- It has become apparent
that a clear relationship between the factors must be established by carefully analysing the results.

Tense, aspect, voice, and mood in English verbs

But wait - there's more! For each main verb phrase you use in a clause, you need to consider which tense, aspect, voice, and mood is best. Depending on what you're talking about, any of them might be suitable! Let's find out exactly what our options are...


In English, we only have two tenses: present and past. Although we talk about the future in English, we do it by using modal verbs or other tenses, so technically it isn't called a tense. 


Aspect gives us a feeling about the verb - is it happening now? Is is going to keep happening? Is it connected to now even though it happened in the past? In other words, it tells us whether a verb is continuing or finished. There are four possible aspects for verbs to have in English. Do you know them all?

  1. simple (e.g. present simple and past simple)
  2. progressive (also called 'continuous') - verb phrases with be + verb-ing
  3. perfect (verb phrases with 'have' or 'had' and past participle)
  4. perfect progressive (2 and 3 at the same time!)


In terms of voice, we have two in English:

  1. active
  2. passive

Active means the subject is doing the action while passive means the action is being done to the subject. Active voice is more common in spoken and informal English, but less common in academic English. Why? Because English is a subject dominant language, so whatever is in the subject position usually gets more focus. This means that if we want to focus on people or someone doing an action, active voice is great, but in academic English we want to focus on facts and the information that was discovered by people, so we often use passive. Let's look at an example. 

As you can see below, the focus in the active sentence is on the scientists doing the action whereas in the passive sentence, it is on the discovery itself. 

  Subject Main verb phrase Object
Active voice Some scientists discovered a new species.
Passive voice A new species was discovered (by some scientists).

Check your writing and speaking to make sure you have the right tense, aspect, and voice for what you want to say. Can you remember what the possibilities are?

Tense: present or past 
Aspect: simple, progressive, perfect, perfect progressive
Voice: active or passive


Mood is different again - there are three moods English verbs can have. Each one reflects a different type of situation:

  • explaining something
  • imagining something that isn't real
  • telling someone what to do

Although the mood is technically a characteristic of verbs, the grammar in a sentence can also tell us which mood is being used. See if you can identify the differences between the three moods by looking at the example sentences below. Which sentences are used to explain/talk about something imaginary / tell someone what to do?

Example 1: Indicative mood
Mood Subordinator Subject Main verb phrase Object / Completent / Extra information
Indicative - It is vital
that government act as soon as possible.
- People must be careful of damaging their health.
This mood is what most of the sentences you'll write and say are. That's because the indicative mood is used to make:
  • statements about facts
  • statements about beliefs or opinions
  • questions
Example 2: Subjunctive mood
Mood Subordinator Subject Main verb phrase Object / Completent / Extra information
Subjunctive - It was suggested vital
that government make these changes immediately.
If I were you,
- I wouldn't do that.

This one is a little trickier. Why? Because it deals with situations that are imaginary or unreal. This means that verb tense rules no longer apply and that verbs may be used in different ways mainly due to the way the language has developed over time. The subjunctive mood is used to talk about:

  1. Conditions
  2. Imaginary situations
  3. Talking about what's necessary or should happen
  4. Suggestions
  5. Wishes

Here are examples for each of those. The verbs are in red - notice how they don't always follow the rules you might be used to:

  1. Conditions
    If you have a good attitude, you'll do well.
    If people don't change their habits, pollution will worsen. 
  2. Imaginary situations
    If I were you, I wouldn't do that.
    If you hadn't worked effectively, you wouldn't have passed. 
  3. Talking about what's necessary or should happen
    It's necessary that they stop cutting down trees immediately.
    I demand the government stop this at once. 
  4. Suggestions
    I suggest people vote on this issue.
    I insist you sit down. 
  5. Wishes
    I wish I was wiser.
    Most people wish things were different. 

For subjunctive, you can practise by finding sites that explain it like this one, or practise the individual sentence types like zero, first, second, and third conditionals

Example 3: Imperative mood

Mood Subordinator Subject Main verb phrase Object / Completent / Extra information
Imperative - - Sit down.
- - Give me that pen.

This one's relatively simple - it's just the base verb, and the subject is implied so we don't need to write it. It's used for instructions or commands. Examples you've probably heard many times include:

  • Please come in. 
  • Take a seat. 
  • Help yourself to tea and coffee. 
  • Look it up online. 

As you might have guessed, this mood isn't commonly used in academic English because you're not usually telling people what to do. The exception would be in science experiments, where instructions need to be reported and possibly copied, and it's often used in things like recipes or instruction manuals. 


So, can you remember all of that? Let's quickly sum up what we've covered:

  • There's one main verb in every clause in English.
  • This main verb is the only verb that can carry tense.
  • Verbs that are not the main voice must be tenseless (e.g. verb-ing / to verb / verb-ed).
  • Some verbs are part of phrasal verbs and the objects that go with these can be put in different positions. 
  • Sometimes verbs have collocates like prepositions and you need to write these words with the verb.
  • Good dictionaries give you the information you need about each verb. 
  • Think about which tense, aspect, voice, and mood of a verb you want to make your meaning clear. 

Now you have learnt about sentence structure, you can now find out how to improve your reading skills and learn better ways to practise listening.


  • Vocabulary
  • Writing

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RMIT University acknowledges the people of the Woi wurrung and Boon wurrung language groups of the eastern Kulin Nation on whose unceded lands we conduct the business of the University. RMIT University respectfully acknowledges their Ancestors and Elders, past and present. RMIT also acknowledges the Traditional Custodians and their Ancestors of the lands and waters across Australia where we conduct our business - Artwork 'Luwaytini' by Mark Cleaver, Palawa.