` Tobe:  `

` +  ` S + was/ were + O

` -  ` S + was/ were + not + O

` ?  ` Was/ Were + S + O ?

` .  ` Yes, S + was/ were

` .  ` No, S + wasn't/ weren't

` *  ` 

`.  ` Was: I/ He/ She/ It/ N

` .  ` Were: You/ We/ They/ Ns

` *  ` Ex:

- He was at his grandma’s house yesterday.

- He wasn't at his grandma’s house yesterday.

- Was he at his grandma’s house yesterday?

` V  thường:  `

` +  ` S + did + Vbare

` -  ` S + didn't + Vbare

` ?  ` Did + S + Vbare ?

`.  ` Yes, S + did

` .  ` No, S + didn't

` *  ` Ex:

- We visited USA last summer.

- We didn't visit USA last summer.

- Did we visit USA last summer.

$#Viie$
$#nocop$

QKĐ: 

KĐ: S+ was/were/V-ed

Ví dụ:

– I was at my friend’s house yesterday morning.

PĐ: S + was/were not/ did not+ V (nguyên thể)

VD: – She wasn’t very happy last night because of having lost money.

NV: Was/Were+ S + V(nguyên thể)?

Did + S + V(nguyên thể)?

VD: Did you sleep last night.