we waited over an hour for Tom 这里为什么用over和for?

we waited over an hour for Tom 这里为什么用over和for? We waited over an hour for the train.【同义句转换】 We waited for - I waited for the train （for） over an hour. We waited over an hour for the train because there were too we have been here for a bus for over an hour,but it()yet 选ha We waited over an hour ___ the train because there were too _____________walking after supper for over half an hour does We had waited for Jane for an hour before she ______. (Having waited)in line for half an hour ,Tom suddenly realiz the film has been on for over an hour 改为同意句 the film （）over I waited （for） you (for） half an hour she has been wait for an hour she has waited for an hour 二者的