過去將來時：
1.概念：
立足于過去某一時刻，從過去看將來，常用于賓語從句中。
2.時間狀語：
the next day(morning, year…),the following month(week…), by then ,
3.基本結(jié)構(gòu)：
?、賥as/were/going to + do;
②would/should + do.
4.否定形式：
?、賥as/were/not + going to + do;
?、趙ould/should + not + do.
5.一般疑問句：
?、賥as或were放于句首;
?、趙ould/should 提到句首。