Negative Forms
Making sentences negative: don't, doesn't, isn't, can't, haven't
01 ยท When to use
When to Use Negative Forms
- Present simple: don't/doesn't + base verb. I don't like coffee.
- Past simple: didn't + base verb. She didn't go.
- Be verb: am/is/are + not. He isn't here.
- Modal verbs: modal + not. I can't swim. You shouldn't go.
- Perfect tenses: have/has/had + not. I haven't seen it.
02 ยท How to form
How to Form Negative Forms
Affirmative +
Subject + auxiliary + not + verb (or contracted: n't)
Negative โ
Already negative
Question ?
Auxiliary + n't + subject + verb? (Didn't you go?)
Contractions: do not โ don't, does not โ doesn't, did not โ didn't, is not โ isn't.
03 ยท Examples
Examples of Negative Forms
She doesn't like pizza.
She don't like pizza.
Third person singular uses 'doesn't'.
I didn't see him.
I didn't saw him.
Use base verb after didn't.
They aren't coming.
They doesn't coming.
Use 'aren't' with present continuous.
04 ยท Common mistakes
Common Mistakes with Negative Forms
Practice Tips for Negative Forms
- Present simple: I/you/we/they don't; he/she/it doesn't.
- Past simple: all subjects use didn't + base verb.
- Be: am not, isn't, aren't (no 'amn't').
- Modals: can't, won't, shouldn't, mustn't, couldn't.
06 ยท Check yourself
Quick Quiz: Negative Forms
Quick quiz
Grammar sorted. Now grow your vocabulary.