用于表示过去未实现的希望和计划的句型：

(1) should like to/ would like to/ would love to have done sth.

例：You should like to have written to your mother.

你本应当给你母亲写信。

(2) was / were going to do sth.(用过去将来时态表示原打算做什么)

例：Lucy was going to watch a basketball match.

Lucy 原打算看一场篮球比赛。

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