$\text{Công thức thì Quá Khứ Đơn : }$

$\text{Tobe:}$ 

$\Rightarrow$ I/he/she/it/danh từ số ít + was + (not).... 

$\Rightarrow$ We/you/they/danh từ số nhiều + were + (not) .... 

$\Rightarrow$ Was/were +S  + ..... ? 

$\text{ĐT thường:}$ 

$\Rightarrow$ S + Ved/cột 2 + O 

$\Rightarrow$ S + did not ( didn't ) + V-inf + O 

$\Rightarrow$ Did + S + V-inf + O ? 

$\text{Ví dụ:}$

$\Rightarrow$ He did his homework yesterday . 

$\Rightarrow$ She was a children five years ago . 

$#Lynkk^^$

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.