1. important adj. 重要的
☆ It's important to eat healthy food.
饮食健康很重要。
2. necessary adj. 必须的；必要的
☆ It's not necessary to thank me.
不需要感谢我。
3. convenience n. 便利；方便
☆ Please call me at your earliest convenience.
请尽快打电话给我。
4. determination n. 决心
☆ It takes a lot of determination to succeed.
要成功就要下很大的决心。
5. adequate adj. 足够的；适当的
☆ His English is not adequate to study abroad.
他的英语水平不足以令他去国外学习。
责任编辑：虫虫
