3. who/ the/ This/ boy/ prize./ is/ first/ win/ the

--> This is the boy who win the first prize.

--> Dịch: Đây là cậu bé - người mà giành giải nhất.

4/ the/ before/ suggested/ Mrs Hoa/ turning/ out./ off/ lights/ going

--> Mrs Hoa suggested turning off the lights before going out.

--> Dịch: Cô Hoa đề nghị tắt đèn trước khi đi.

5.Going swimming on the river in summer is very interesting

--> It is very interesting to go swimming on the river in summer.

* Cấu trúc:  Ving + is + adj = It is + adj + to V (nguyên thể)

--> Dich: Đi bơi trên sông vào mùa hè rất thú vị.

3. who/ the/ This/ boy/ prize./ is/ first/ win/ the

--> This is the boy who win the first prize. (mình nghĩ win --> won thì đúng hơn)

4/ the/ before/ suggested/ Mrs Hoa/ turning/ out./ off/ lights/ going

--> Mrs Hoa suggested turning off the lights before going out.

* Cấu trúc: suggest + Ving

5.Going swimming on the river in summer is very interesting

--> It is very interesting to go swimming on the river in summer.

* Cấu trúc:  Ving + is + adj = It is + adj + to V (nguyên thể)