that.which.省略语法上都可以.但现实口语中用省略的情况比较多.为什么用省略?因为'the movie'在从句中是跟在动词后作宾语[I saw 'the movie' last night.].如果'the movie'是在从句中作主语,就只能用'which' 举例来...不客气~