time in 1999

　　in 20 century

　　in a flash(瞬时),

　　in a lucky hour(在幸运时刻)

　　in a minute

　　in a second转自环 球 网 校edu24ol.com

　　in a short time

　　in a while, in a wink(一瞬间)

　　in advance(预先)

　　in an emergency(在紧急地时候),

　　in an evil hour(在不幸地时刻)

　　in an instant, in ancient times

　　in broad day(在大白天)转自环 球 网 校edu24ol.com

　　in course of, (在…期间)

　　in December

　　in due course(及时地)

　　in future

　　in good season(及时地)

　　in no time(马上)

　　in one's childhood

　　in one's spare time

　　in one's teens

　　in one's youth

　　in recent years

　　in season(适时)转自环 球 网 校edu24ol.com

　　in seconds(在很短的时间)

　　in some cases(有时候)

　　in spring, in the afternoon

　　in the beginning

　　in the daytime

　　in the end

　　in the evening

　　in the future

　　in the long run(最后)转自环 球 网 校edu24ol.com

　　in the meantime

　　in the morning

　　in the nick of time(在紧急关头)

　　in the night, in the past

　　in the thick of (在最激烈的时刻),

　　in the thick of(在最激烈的时刻)