e to have done表示“本打算干”.
e.g.I was to have seen him last Wednesday but he did not come.
我本来上周三就能见到他的,可他没来.
⑥用来表示目的.
e.g.The prize was to honor him for his great discoveries.
这个奖品是为他的重大发现而奖给他的.
⑦作表语,表示主语的工作、性质等状况.
e.g.Your work this afternoon is to take care of these children.
你今天下午的工作就是照顾好这些孩子.
My idea is to lay aside all the affairs right today.
我的观点就是今天把所有的事情都放一下.