今天，我們繼續第三課《分手了！》的學習。從今天開始，我們來咬文嚼字，分析這一課中對話每一個句子的語法現象。

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

解析1：這是一個符合句。主句是“I just heard”，從句是“Jane and Mike broke up because Mike was having an affair for the past year.”。 這個從句是賓語從句，引導詞是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，我聽見王后說你是應該殺頭的。

賓語從句“Jane and Mike broke up because Mike was having an affair for the past year.”中又含有由“because”引導的原因狀語從句：Mike was having an affair for the past year，主句是“Jane and Mike broke up”。

原因狀語從句使用的是過去進行時“were having”，表示過去在某一時間段或某一段時間內正在發生或進行的動作或狀態。也就是說：在the past year這一年中，Mike一直與其他女人有染。

解析2：just在這里是副詞，表示“時間”，意思是“剛剛，最近”，它用于完成時態; 在美式英語中用于一般過去時態。

例如：
When you arrived he had (only) just left. 你來時，他剛剛走。

By the time you arrive, he will have just finished. 等你來到時，他剛好能做完。

He has just been speaking. 他剛才一直在說話。

I just saw him a moment ago. （美式英語用法）我幾分鐘之前剛看見他。