今天，我们继续第三课《分手了！》的学习。从今天开始，我们来咬文嚼字，分析这一课中对话每一个句子的语法现象。

I just heard that Jane and Mike broke up because Mike was having an affair for the past year.

解析1：这是一个符合句。主句是“I just heard”，从句是“Jane and Mike broke up because Mike was having an affair for the past year.”。 这个从句是宾语从句，引导词是that，它可以省略掉。例如：

I heard the Queen say only yesterday you deserved to be beheaded. 就在昨天，我听见王后说你是应该杀头的。

宾语从句“Jane and Mike broke up because Mike was having an affair for the past year.”中又含有由“because”引导的原因状语从句：Mike was having an affair for the past year，主句是“Jane and Mike broke up”。

原因状语从句使用的是过去进行时“were having”，表示过去在某一时间段或某一段时间内正在发生或进行的动作或状态。也就是说：在the past year这一年中，Mike一直与其他女人有染。

解析2：just在这里是副词，表示“时间”，意思是“刚刚，最近”，它用于完成时态; 在美式英语中用于一般过去时态。

例如：
When you arrived he had (only) just left. 你来时，他刚刚走。

By the time you arrive, he will have just finished. 等你来到时，他刚好能做完。

He has just been speaking. 他刚才一直在说话。

I just saw him a moment ago. （美式英语用法）我几分钟之前刚看见他。