Mệnh lệnh phủ định :
+ Don't smoke
+ Don't be late
+ Don't speak in the class
+ Don't forget
+ Don't run
Mệnh lệnh khẳng định:
+ Sit down
+ Be quiet
+ Stand up
+ Look at me
+ Take out your book.

Come in.(Mời vào.)
Don 't come in
Sit down.(Ngồi xuống.)
Don't sit down
Stand up.(Đứng lên.)
Don't stand up
Open your book.(Mở sách ra.)
Don't open your book
Close your book.(Đóng sách lại.)
Don't close your book
Raise your hand.(Giơ tay lên.)
Don't raise your hand
Look at the board.(Nhìn lên bảng.)
Don't look at the board
Listen carefully.(Lắng nghe.)
Don't listen carefully
Be quiet.(Trật tự.)
Don't be quiet
Take out your book.(Lấy sách ra.)
Don't take out your book

dạng khẳng định
+ I'm a student.
+ He's a teacher.
+ They are workers.
+ She is rude.
+ It is beautiful.
dạng phủ định
+ I'm not a worker.
+ He isn't a bussiness man.
+ They are not good.

Phủ định:
1. Don't let's be alarmed by rumors.
2. Don't let's go to that awful restaurant again.
3. Let's not have dinner together.
4. Let's not sit side by side.
5. Let's not play game.
6. Let's stop playing together
7. Let's stop school.
8. Let's not buy this shirt
9. Let's not go to her house.
10. Let's not watch that movie.
Khẳng định:
1. Let's have dinner at this restaurant.
2. Let's go to the park to play.
3. Let's buy this hat.
4. Let's eat ice cream.
5. Let's do the homework.
6. Let's do the chores..
7. Let's come together.
8. Let's love each other.
9. Let's see that movie
10. Let's sit here.