4. 表示过去未曾实现的想法或打算，通常用过去完成时，但在一定的上下文当中，只要意思清楚，也可只用一般过去时。如：

I had expected to come early, but I missed the early bus. 我本来想早点来的，但未赶上早班车。

We expected him to arrive yesterday. 我们原以为他昨天就会到的。

有时在其后接不定式的完成式。如上面第一句也可改成：

I expected to have come early, but I missed the early bus.

5. 注意以下与 as 和 than 连用的句子(from www.yywords.com)：

He returned three days earlier than (he was) expected. 他回来的时间比预料的要早三天。

As might have been expected, he won first prize. 正如所料，他获得了一等奖。

The machine, as might be expected, has stopped operating. 正如所料，这台机器已停止运转。

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