yesterday

名词 yesterday:

1. the day immediately before today
2. the recent past

副词 yesterday:

1. on the day preceding today
2. in the recent past; only a short time ago

1. The sound of fire-alarm was heard by us yesterday evening.
   昨晚我们听见了火警声。
2. I bought several books yesterday.
   我昨天买了好几本书。
3. I wasn't born yesterday.
   我又不是三岁小孩。
4. I saw him only yesterday.
   我昨天才见到他。
5. Yesterday was Friday.
   昨天是星期五。
6. He arrived yesterday.
   他昨天到达的。

yes.ter.day

n.（名词）
The day before the present day.
昨天：当天的前一天
Also yesterdays Time in the past, especially the recent past.
也作 yesterdays 近来，最近：过去的时间，尤指最近过去的
adv.（副词）
On the day before the present day.
昨天：当天的前一天
A short while ago.
刚才，最近

来源：
Middle English
中古英语
from Old English geostran dôg
源自 古英语 geostran dôg
geostran [yesterday] * see yester-
geostran [昨天] *参见 yester-
dôg [day] * see day
dôg [日] *参见 day