Flight 400 Is Not Late!
Negative Sentences
Negative sentences can use not, do not, or does not.
Add not after am, is, or are.
He is happy.
She is not happy.
Add do not or does not before other verbs.
She gets on the flight.
He does not get on the flight.
Build Negative Sentences
Read each sentence. Add not to make it a negative sentence. Say the new sentence.
1. We are on Flight 400.
We are not on Flight 400.
1. We are on Flight 400.
2. It is 10:00.
3. We are late.
4. People are in a hurry.
Read each sentence. Add do not or does not to make it a negative sentence. Say the new sentence.
5. The plane leaves at 10:30
The plane does not leave When you use does not, take the s off the verb. at 10:30.
5. The plane leaves at 10:30.
6. We walk very fast.
7. We get to Gate 55.
8. A woman talks to us.
9. We miss the plane.
10. The plane leaves without us.
Written Practice 
11.–20. Write the sentences you made in Items 1–10 above.
11. We are on Flight 400. We are not on Flight 400.