during与for这两个前置词都有“在……期”之意。
during : 侧重指习惯性的某一段时间，而for指特定的某一段时间。during指继续的时间概念，突出事件发生的时刻，而for侧重事件持续时间的总长度。
- They work during the night and sleep by day.
他们夜里干活儿，白天睡觉。 - There were huge advances in aviation technology during the Second World War.
在第二次世界大战期间航空技术有了长足的发展。
- What did you buy him for Christmas?
圣诞节你给他买了什么？ - I'd like an appointment with the doctor for some time this week.
我想这周预约个时间看医生。 - We're having a party for Jim's 60th birthday.
我们要举办聚会庆祝吉姆的60岁生日。
