once
英 /wʌns/
中文释义
ad.一次；曾经 n.一次
Indicates that something happened a single time in the past.
常用搭配
- once again再一次
- at once立刻
- once a week每周一次
例句
- We visit the beach once a year.我们每年去一次海滩。
- Please reply at once if there's a problem.如有问题请立即回复。
Indicates that something happened a single time in the past.