此時，was/were “supposed to” or “going to”就可以派上用場。
1.I was supposed to call my mom, but I didn’t.
2.I was supposed to visit my friend, but He wasn’t home.
3.I was supposed to talk to my boss, but he was too busy.
1.We were going to buy some milk, but the store was closed.
2.I was going to send the check, but I didn’t have enough money in my account.
3.He was going to fix the computer, but he came home too late.
總結來說，當我們想闡述我們曾經計畫做某件事，卻因計畫生變而變故時，was/were “supposed to” or “going to”就可以派上用場，先說I was supposed/going to …..，後面再說明原因。