`2.` `(-)` He doesn't have breakfast at 8.00.

      `(?)` Does he have breakfast at 8.00?

`3.` `(-)` He doesn't love her.

      `(?)` Does he love her?

`4.` `(-)` Some schoolgirls don't wear uniforms.

      `(?)` Do some schoolgirls wear uniforms?

`5.` `(-)` He doesn't trust you.

      `(?)` Does he trust you?

`6.` `(-)` He doesn't try hard.

      `(?)` Does he try hard?

`7.` `(-)` The park doesn't close at dusk.

      `(?)` Does the park close at dusk?

`8.` `(-)` He doesn't miss his mother.

      `(?)` Does he miss his mother?

`9.` `(-)` The children don't like sweets.

      `(?)` Do the children don't like sweets?

`10.` `(-)` He doesn't finish work at 6.00.

        `(?)` Does he finish work at 6.00?

`11.` `(-)` He doesn't live beside the sea.

        `(?)` Does he live beside the sea?

`12.` `(-)` This stove doesn't heat the water. 

        `(?)` Does this stove heat the water?

`13.` `(-)` He doesn't worry about her.

        `(?)` Does he worry about her?

`14.` `(-)` These thieves don't work at night.

        `(?)` Do these thieves work at night?

`-` Công thức thì Hiện Tại Đơn với động từ thường :

`(+)` I/ You/ We/ They/ N số nhiều + Vinf + ...

       She/ He/ It/ N số ít + V(s/es)

`(-)` I/ You/ We/ They/ N số nhiều + do not/ don't + Vinf + ...

       She/ He/ It/ N số ít + does not/ doesn't + Vinf + ...

`(?)` Do + I/ You/ We/ They/ N số nhiều + Vinf + ... ?

       Does + She/ He/ It/ N số ít + Vinf + ... ?