Building negative sentences

So you’ve mastered the tenses, you know the difference between the present simple, perfect and continuous, but negative sentences are still difficult? When do we use an extra helping verb and when can just add not? Here is a brief guide to building negative sentences in English.

Present simple

When we form negative sentences in the present and past simple, we need a helping verb as well as the word not followed by the main verb. In the present, we use do or does:

I do not like chocolate. / I don’t like chocolate.

He does not like chocolate. / He doesn’t like chocolate.

do(es) + not + base form of main verb (no -s, -ing or to)

As we can see from these examples, we can shorten do not or does not to don’t or doesn’t. We do this a lot when we speak or write informally.

It’s not important what the main verb is, we nearly always need the helping verb to make a negative sentence. Sometimes we can have the verb do twice in once sentence, once as the helping verb and once as the main verb:

She does not do her homework. / She doesn’t do her homework.

This rule also applies to the verb have:

We do not have time. / We don’t have time.

Past simple

It’s the same with the past simple too, but this time we use did not or the short form didn’t:

I did not go to the meeting. / I didn’t go to the meeting.

We did not do the work. / We didn’t do the work.

He did not eat at home. / He didn’t eat at home.

did + not + base form of main verb (no -s, -ing, -ed or to)

The helping verb stays the same here; we don’t need to change it for he/she/it. Another important point to remember is that we don’t need to put the main verb in the past. The did is enough to show we’re talking about the past.

Exceptions

The only time we don’t need a helping verb with the simple tenses are with the verb be or modal verbs (e.g. can, must, should, might, may, will, shall, etc).

I am not at school. / I’m not at school.

He was not in Spain. / He wasn’t in Spain.

We must not open the door. / We mustn’t open the door.

They cannot pass the test. / They can’t pass the test.

She should not drive. / She shouldn’t drive.

Here, we simply add not after be or the modal verb.

Present continuous

Because we already have a helping verb in the sentence, we just add not between the helping verb and the main verb:

I am not going to the party. / I‘m not going to the party.

We are not giving the presentation. / We‘re not giving the presentation.

He is not learning Japanese. / He‘s not learning Japanese.

Other past tenses

Similarly in other past tenses, we already have a helping verb in the sentence (a form of either have or be). This means we just add not after the helping verb and we’re good to go.

We have not been to the cinema. / We haven’t been to the cinema.

I was not talking to my friend. / I wasn’t talking to my friend.

He had not visited Greece before. / He hadn’t visited Greece before.

Future tenses

When we use the helping verb will, we also just add not to the sentence:

I will not go the conference. / I won’t go the conference.

It will not rain tomorrow. / It won’t rain tomorrow.

Summary

The general rule is that if we already have a helping verb in a sentence, we just add not after the helping verb to make a sentence negative. If there is no helping verb (like in the present or past simple), we need to add one (e.g. do or did). There are, however, some exceptions, such as with the verb be or modal verbs.


Do you have other helpful tips for building negative sentences? Or do you have more questions? Feel free to post them in the comments below.

Five common mistakes when learning English

Learning a language is not always easy. There are new words to learn, grammar structures to master and different situations to practise using our new skills. Everyone makes mistakes sometimes when speaking a new language; it’s part of the learning process. I’ve collected five common mistakes when learning English and some tips on how to correct them.

1. If + will/would

If sentences can be confusing. There are lots of different types of if sentences and we can even mix them. However, one important rule is that will or would do not go in the same part of the sentence as if. They do not like each other! Here are some examples:

If I will see her, I will tell her.
If I see her, I will tell her.

If I would get the job, I would be very happy.

If I got the job, I would be very happy.

2. Double past tense

When we make negative sentences or questions in the past tense, we normally use the helping verb did or didn’t. This verb shows we are talking about the past. That means we don’t add -ed or use the past form of the main verb. For example:

I didn’t went to the show.
I didn’t go to the show.

Did you saw the email?
Did you see the email?

More tips on building negative sentences.

3. When to use present perfect

There are several rules that help us to decide if we need present perfect or simple past. Probably the most important one is that we cannot use present perfect with time words that show that something is finished, such as:

  • yesterday
  • last week
  • last month
  • on Tuesday
  • in October
  • in 2017
  • in the morning

Have you gone to the gym yesterday?
Did you go to the gym yesterday?

Has she called the client last week?
Did she call the client last week?

I’ve written on more tips on using the present perfect and past simple here.

4. Negative modal verbs

Modal verbs are special helping verbs. When we make a negative sentence with a modal verb (can, must, may, should, must, might, etc) we do not use don’t. Instead, we just add not after the modal verb.

I don’t can speak Spanish.
I can’t speak Spanish.

You don’t should wear your hat inside.
You shouldn’t wear your hat inside.

Must has special rules!

We don’t must finish the presentation today.
We don’t have to finish the presentation today.
(We can, but it’s not necessary.)

Note: We mustn’t smoke in the office.
(It is forbidden.)

5. Present simple or continuous?

This is a common mistake for both beginners and advanced learners. If an action is repeated, we use simple present. If an action is right now or for a short time around now, we use present continuous.

Every day I’m starting work at 8am.
Every day I start work at 8am.

At the moment I learn Russian.
At the moment I’m learning Russian.

More tips about present tenses can be found here.


Do you have any other tips to help with these topics? What do you find most difficult in English?

Asking questions in the present simple

When we learn a new language, we learn lots of new vocabulary. We quickly learn to make sentences. But it’s also important to ask questions. We need questions when we are travelling, at work or at school. This post focuses on making questions in the simple present tense.

Questions with a helping verb

Let’s take a simple sentence in the present tense:

I like chocolate.
Subject – verb – object

The main verb in this sentence is like.

To make a question, we also need a helping verb. The helping in the simple present is normally do. This goes at the beginning of the question, and the subject and the main verb swap places:

Do you like chocolate?
Helping verb – subject – main verb – object

Here is another example:

They work in Manchester.

Do they work in Manchester?

Here is an example with the main verb do. It sounds strange because we say do twice, once as the helping verb and once as the main verb.

I always do my homework.

Do you always do your homework?

He/she/it

If the subject in the sentence is he/she/it (a person or a thing) we add an ‘s’ to the verb.

She plays tennis.

To make a question we use the helping verb does but the main verb does not have an ‘s’. We only need one ‘s’ in the question.

Does she play tennis?

Most verbs use do as a helping verb in the simple present, but there are some special verbs with different rules.

Questions without a helping verb

The verb to be doesn’t have a helping verb. To make a question, just swap the verb and the subject:

I am happy.
Are you happy?

He is here.
Is he here?

They are finished.
Are they finished.

Modal verbs

Modal verbs include can, must, should, etc. They are used with other main verbs in the sentence. They are like helping verbs. If there is a modal verb, there is no extra verb helping verb in the question. We just swap the modal verb and the subject.

I can speak Spanish.
Can you speak Spanish?

They should be here.
Should they be here?

We will see the film.
Will we see the film?

With W question words

If we use a W question word (when, where, why, what, etc.), this comes at the beginning of the question. After that comes the helping verb do.

When do you start work?
Where do you live?
Why do you like the film?
What do you think about the new project?


Extra practice
It can feel strange to use "do" to make questions, but it's 
important to practise this form. Make a short list of verbs 
from your course. For each verb, say and then write a 
question with "do" as a helping verb. 

What questions do you often ask at work or at school?