Negations - Simple present

In the simple present you often negate a sentence by adding do + not or does + not.
Instead of ´do not´, you often write don't.
Instead of ´does not´, you often write doesn't.
After do not/don't or does not/doesn't the infinitive always follows.

Examples

• They live in Canada.
  They do not/don't live in Canada.
• A lion eats meat.
  A lion does not/doesn't eat meat.

A negation can be made with a form of the verb to be + not.
Again you can use the contraction of to be + not.

Examples

• She is friendly.
  She is not/isn't friendly.
• They are on time.
  They are not/aren't on time.

A negated sentence can also be made with one of the other auxiliary verbs + not/n't.

Examples

• They are not/aren't coming tomorrow.
  He has not/hasn't been to Ibiza.
• I cannot/can't stay tonight.
  We will not/won't leave tomorrow.