is not → isn’t

• She isn’t coming to the party.

are not → aren’t

• They aren’t ready yet.

was not → wasn’t

• He wasn’t feeling well yesterday.

were not → weren’t

• We weren’t aware of the change in plans.

has not → hasn’t

• It hasn’t rained all week.

have not → haven’t

• I haven’t seen that movie.

had not → hadn’t

• She hadn’t finished her homework.

will not → won’t

• He won’t be able to join us.

would not → wouldn’t

• I wouldn’t do that if I were you.

do not → don’t

• I don’t like spinach.

does not → doesn’t

• He doesn’t understand the question.

did not → didn’t

• She didn’t hear the alarm.

can not → can’t

• We can’t go to the park today.

could not → couldn’t

• They couldn’t find the keys.

should not → shouldn’t

• You shouldn’t eat too much candy.

might not → mightn’t

• They mightn’t come to the meeting.

must not → mustn’t

• You mustn’t be late for class.

need not → needn’t

• You needn’t worry about the test.

ought not → oughtn’t

• You oughtn’t be so rude.

would not have → wouldn’t’ve

• They wouldn’t’ve known if you hadn’t told them.

could not have → couldn’t’ve

• She couldn’t’ve finished it without help.

should not have → shouldn’t’ve

• I shouldn’t’ve said that.

might not have → mightn’t’ve

• He mightn’t’ve seen the sign.

must not have → mustn’t’ve

• They mustn’t’ve realized it was closed.

does not have → doesn’t have

• She doesn’t have any siblings.

do not have → don’t have

• I don’t have time for this.

did not have → didn’t have

• We didn’t have enough money.

was not going to → wasn’t gonna

• He wasn’t gonna leave early.

were not going to → weren’t gonna

• They weren’t gonna join us.

has not been → hasn’t been

• It hasn’t been easy.

have not been → haven’t been

• I haven’t been there.

had not been → hadn’t been

• He hadn’t been feeling well.

will not be → won’t be

• There won’t be any dessert.

would not be → wouldn’t be

• She wouldn’t be happy about this.

could not be → couldn’t be

• It couldn’t be true.

should not be → shouldn’t be

• You shouldn’t be here.

might not be → mightn’t be

• He mightn’t be the right person for the job.

must not be → mustn’t be

• This mustn’t be the only solution.

does not know → doesn’t know

• She doesn’t know the answer.

do not know → don’t know

• I don’t know what to do.

did not know → didn’t know

• They didn’t know it was a secret.

was not able to → wasn’t able to

• He wasn’t able to attend.

were not able to → weren’t able to

• We weren’t able to finish on time.

has not seen → hasn’t seen

• She hasn’t seen the movie.

have not seen → haven’t seen

• I haven’t seen you in ages.

had not seen → hadn’t seen

• They hadn’t seen each other in years.

will not see → won’t see

• You won’t see me there.

would not see → wouldn’t see

• He wouldn’t see the point.

could not see → couldn’t see

• I couldn’t see anything in the dark.

should not see → shouldn’t see

• You shouldn’t see that movie.

let’s practice!