promise to do
英
美
- do v.做；干n.注意事项；聚会；事情
- promise n.诺言；预示；约定；(有)希望v.允诺；发誓；答应；有希望
- to prep.对于；为了；(表示方向)到；向；(表示间接关系)给adv.（表示方向）去；（门）关上
- If everyone will promise to do his part, the plan will certainly he a success.
如果每个人都保证尽到自己的责任，计划肯定会成功。
- He gave his solemn promise to do better.
他庄重地保证把事情办好。
