`5` I suggested Viet that he (should) take part in the contest tomorrow.

`-` S + suggest + that + S + (should) + V-inf + O : Ai đó gợi ý ai nên làm gì.

`6` He suggested using fewer plastic bags.

`-` S + suggest + V-ing + O : Ai đó gợi ý làm gì `(` không gợi ý cho người khác `)`.

`7` The teacher suggested Viet that he (should) watch more English films.

`-` S + suggest + that + S + (should) + V-inf + O : Ai đó gợi ý ai nên làm gì.

`8` Andrew suggested going for a walk in the park.

`-` S + suggest + V-ing + O : Ai đó gợi ý làm gì `(` không gợi ý cho người khác `)`.

`9` Peter suggested that I (should) take a taxi.

`-` S + suggest + that + S + (should) + V-inf + O : Ai đó gợi ý ai nên làm gì.