`9,`

`(-)` Nam didn't write an essay in Litereture class this morning.

`(?)` Did Nam write an essay in Litereture class this morning?

-------------

`10,`

`(-)` I didn't watch TV yesterday morning.

`(?)` Did you watch TV yesterday morning?

------------

`11,`

`(-)` Nam and Minh weren't in the English club last Tuesday.

`(?)` Were Nam and Minh in the English club last Tuesday?

_____________________

`\star` Cấu trúc thì quá khứ đơn:

`@` Thì quá khứ đơn với động từ thường:

`(+)` S + V2/V-ed + O.

`(-)` S + didn't + V-inf + O.

`(?)` Did + S + V-inf + O?

`@` Thì quá khứ đơn với động từ to be:

`(+)` S + was/were + O.

`(-)` S + wasn't/weren't + O.

`(?)` Was/Were + S + O?

`#Cloud`

Cấu trức thì quá khứ đơn :

(+) S + was/ were +…                                                        (+) S + $V_{ed}$  + ...

(-) S + was/ were + not                                                       (-) S + didn't  + $V_{inf}$ .....

(?) Was/ Were + S +…?                                                        (?) Did + S + $V_{inf}$ ..... ?

9 .

(+) Nam  wrote  an essay in lass this morning

(-) Nam didn't write an essay in lass this morning

(?) Did Nam write an essay in lass this morning ?

10.

(+) I watched TV yesterday moring

 (-) I didn't watch TV yesterday moring

(?)  Did you  watch TV yesterday moring ?

11

(+)  Nam and Minh  were in the English club last Tuesday

 (-) Nam and Minh  weren't in the English club last Tuesday

(?) Were Nam and Minh in the English club last Tuesday  ?