last night 12:30 five months yesterday 30 years 1950 two days lunch time a few minutes september 1st I was 10 last spring a long time six hours saturday nightfor:(后面接什么)since:(后面接什么)
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last night 12:30 five months yesterday 30 years 1950 two days lunch time a few minutes september 1st I was 10 last spring a long time six hours saturday nightfor:(后面接什么)since:(后面接什么)
last night 12:30 five months yesterday 30 years 1950 two days lunch time a few minutes september 1st I was 10 last spring a long time six hours saturday night
for:(后面接什么)
since:(后面接什么)
last night 12:30 five months yesterday 30 years 1950 two days lunch time a few minutes september 1st I was 10 last spring a long time six hours saturday nightfor:(后面接什么)since:(后面接什么)
for:后面接表示段的时间,five months,30 years,two days,a few minutes,a long time ,six hours,
since 后面接 表示点的时间,last night ,12:30 ,yesterday,1950,lunch time,september 1st,i was 10,last spring ,saturday night
for:后面跟表示一个时段的时间概念，比如five months,30years,two days,afew minutes,a long time,six hours,
since:后面跟表示一个时点的时间概念laste night, 12:30,yesterday,1950,september1st,last spring,saturday night