3、一般將來時
3.1、will/shall do： Next month， my sister will be nineteen. I shall/will return you the book tomorrow.
3.2、be going to do： The wall is going to be painted green. It is going to rain.
3.3、be to do表示按計劃要發(fā)生的事： We are to meet at the school gate.
3.4、be about to do即將(正要)做某事： Autumn harvest is about to start.
4、一般過去將來時
He said that he would get married soon. I asked him when he would come here again.
5、現(xiàn)在進行時
5.1、表示說話時，或現(xiàn)階段正在進行的動作或發(fā)生的情況。 They are making an experiment now.
5.2、計劃即將發(fā)生，如go， come， leave， arrive： He is coming here next week and is staying here until August.