Used to vs Would / For Intermediate and above

source: Practice English with Paul       2015年6月22日
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00:49 used to + infinitive
01:08 I never used to...
01:36 the form of used to 
01:57 pronunciation of used to
02:40 past states or habits which are now finished 
03:56 would
04:18 'would' for talking about the past 
05:05 'used to' for past states 
05:36 Cambridge exams