IV. *Cấu trúc used to: (+) S + used to + V(inf) + O

                                     (-) S + didn't use to + V(inf) + O

                                     (?) Did + S + use to + V(inf) + O?*

a, Tan used to live in the farm when he was small

b, We didn't use to have electricity when living in the country

c, Did they use to visit home village last year?

d, Mr Cuong used to phone me in 1973

e, Houses used to be cheaper last month

f, Streets didn't use to be noisy at night.

g, I used to swim in that river

h, They used to leave Nha Trang when they were business man.

VI.

It was cloudy yesterday

→ Yesterday là dấu hiệu nhân biết quá khứ đơn

In 1990, we moved to another city

→ In + mốc thời gian là dấu hiệu nhận biết quá khứ đơn

She didn't go to the church five days ago

→ Ago là dấu hiệu nhận biết quá khứ đơn

How was he yesterday?

→ Yesterday là dấu hiệu nhận biết quá khứ đơn.

---     XIN TRẢ LỜI HAY NHẤT NHA^^   ---

vi

It was cloudy yesterday.

In 1990, we moved to another city

When did you get the first gift?

She didn't go to the curch five days ago.

How was he yesterday