1. No, please don't tell anyone about it

=> Would I rather you didn't tell anyone about it?

2. I used to buy a newspaper on the way to work last year

=> I often bought a newspaper on the way to work last year.

used to + V: đã từng

diễn tả một thói quen trong quákhứ

3. Who owns this umbrella (belong)

=> Who does this umbrella belong to?

4. They enjoyed the show very much (in)

=> They were interested in the show very much

enjoy sth = tobe interested in sth: thích cái gì

Câu 1 và câu 3 mk làm đc nhưng ko nhớ rõ cấu trúc nên ko bt nên giải thk ntn

1.  Would I rather you didn't tell anyone about it

$\text{ => S1 + would rather + (that) + S2 + V-ed}$

2.  I often bought a newspaper on the way to work last year.

$\text{=> Cấu trúc S + used to + V-inf}$

3.  Who does this umbrella belong to?

$\text{=> Wh.. + do/does + S + V + to?}$

4. They were interested in the show very much

$\text{ => Cấu trúc: S + be + adj + in + O }$

$#Chee$