what are you supposed to do when you meet someone for the first t_英语解答

what are you supposed to do when you meet someone for the first time?为什么要用for的介词呢?
for 不是+一段时间吗?
表示时间的究竟是什么时候用什么介词呢?什么时候用in ,on ,at,for呢?

人气：240 ℃　时间：2019-08-18 00:58:28

解答

(do sth）for the first /second ...time 这是固定短语 "第一/二...次做某事"in +不具体的时间（年、月等）in the year1990/ in Octoberon+具体日子（具体某一天或说出某天的天气状况）on 12,December/ on a rainy n...