congratulation/congratulate/celebrate/celebration/ceremony/accelerate/grateful/gratitude
记忆：
1． grate 联想great, 好的，congratulate [ kEn5^rAtjuleit] 同时感到好的，祝贺 I have congratulated him on his success in winning the first.他成功获得第一名，我已向他表示祝贺。
2． congratulation [ kEn7^rAtju5leiFEn ] n. 祝贺 He has won! Let’s go over to give him our congratulations. 他赢了！我们过去向他表示祝贺吧！
3． 词根cele表示“高”，celebrate [ 5selibreit ] 达到高峰，而庆祝。 vt. 庆祝 This evening we will hold a party to celebrate his success.今晚我们要举行一个晚会来庆祝他的成功。
4． celebration [ 7seli5breiFEn ] n. 庆祝 The celebration will be unforgettable.这次庆祝活动会令人难忘。
5． ceremony [ 5serimEni ] cere-mony n.典礼, 仪式 The president made a warm speech at the opening ceremony. 在开幕式上总统作了热情的演讲。
6． accelerate [ Ak5selEreit ] ac-cele-rate 提高cele速度rate， v. 加速, 促进 The opening policy has surely accelerated the development of our economy. 开放政策的实施加快了我们的经济发展。
7． grateful [ 5^reitful] grate-ful adj. （因好而）感谢的，感激的 I am grateful to you for your timely help. 对你的及时帮助，我深表感谢。
8． gratitude [ 5^rAtitju:d ] n. 感激 How can I show my gratitude to you?我怎样也表达不了对你的感激之情。
另类阅读：
They held a ceremony to celebrate the victory. The government also sent its congratulations to them, which made them very grateful. It accelerated their efforts for more glory for the country.
轻松一刻
TEACHER: Well, at least there's one thing I can say about your son.
FATHER: What's that?
TEACHER: With grades like these, he couldn't be cheating.