用for或since填空

Question

1.Jill has been in Lreland( )Monday.2.Jill has been in Lreland( )three days.3.My aunt has lived in Australia( )15 days.4.Margaret is in her office.She has been there( )7o'clock.5.India has been an independent country( )1974.6.The bus is late.We've been waiting( )20 minutes.7.Nobody lives in those houses.They have been empty( )many years.8.Mike has been ill( )a long time.He has been in hospital( )October.

Answer 1

since for for since since for for for since

到底用since还是用for，关键看后面跟的是“时间点还是时间段”。时间点也就是某个时间，比如去年，上个月，1980年，上周。时间段就是多长的一段时间，比如一周，一年，半个月等等。时间点的用since,时间段的用for.