副词 “yesterday”
- 昨天
I lost my keys yesterday and found them under the couch this morning.
- 昨天(用于强调某事需要立即完成,好像应该在过去已经完成)
When should we do it? Yesterday.
名词 “yesterday”
单数yesterday,复数yesterdays或不可数
- 昨天
Yesterday was so sunny compared to today's rain.
- 过去(指过去的某个时期,通常暗示某事不再是当前或现代的)
In this fast-paced world, dial-up internet is yesterday's technology.