Đáp án + Giải thích các bước :

`1`.

( - ) : Tom wasn't a member of the Youth club

( ? ) : Was Tom a member of the Youth club ?

`2`.

( - ) : The school wasn't closed due to the snow

( ? ) : Was the school closed due to the snow ?

`3`.

( - ) : The organisation didn't provide shelter for the children

( ? ) : Did the organisation provide shelter for the children ?

`4`.

( - ) : Tom and his friends didn't go to orphanages to learn English yesterday

( ? ) : Did Tom and his friends go to orphanages to learn English yesterday ?

_____________________________

Thì quá khứ đơn :

- Cấu trúc ( Động từ thường ) :

( + ) : S + V-2/ed

( - ) : S + didn't + V-0

( ? ) : Did + S + V-0 ?

__________________________

Thì quá khứ đơn :

- Cấu trúc ( Động từ to be ) :

( + ) : S + Was / were + adj / noun

( - ) : S + Was / were + not + adj / noun

( ? ) : Was / were + S + adj / noun ?

+ I , he , she , it , danh từ số ít dùng Was

+ You , we, they, danh từ số nhiều dùng were

__________________________

$\color{Orange}{\text{#CuteLucy}}$

1.
(-) Tom wasn't a member of the Youth Club
(?) Was Tom a member of the Youth Club?

2.
(-) The school wasn't closed due to the snow
(?) Was the school closed due to the snow?

3.
(-) The organisation didn't provide shelter for the children
(?) Did the organisation provide shelter for the children?
4.
(-) Tom and his friends didn't go to orphanages to learn English yesterday
(?) Did Tom and his friends go to orphanages to learn English yesterday?

QKĐ :

TOBE 

(+)  s+ was / were +o

(-) s + was / were + not +o 

(?) was / were + s + o 

V- thường 

(+) s + V2/ed + O

(-) S + didn't + Vo + o

(?) did + s + Vo + o