will \be doing to do \be about to do \be to do的区别
3个回答

will是表示将来的一般用法

be going to do有……的趋势(如天气变化),也有计划要做(I'm going to have a walk.)

be about to do正要做……(I was about to go out when the phone rang.)

be to do有计划,安排,命令的意思,有时可以翻成应该.(The door is to be locked.你要把门关上)