2022年初中英語：過去完成式的形式

過去完成式的形式如下：

had + past participle

過去完成式是不能單獨用的。我們用的時候，必須有另一個事件。也就是說，假如我們有兩件事 A 和 B，兩件事都發生在過去，但 A 發生在 B 以前，A 應該用過去完成式，B 則用過去式。以下是幾個例子：

(1) 他到臺灣以前，曾學過中文。

He had studied Chinese before he came to Taiwan.

(2) 他念大學以前，曾前工作過。

He had worked before he decided to go to college.

(3) 我寫這篇有關愛爾蘭的小說以前，曾去過愛爾蘭。

I had been to Ireland before I wrote this book about Ireland's people.

(4) 我在上大學以前，已經學過微積分。

I had studied calculus before I got into college.

(5) 周一以前，已經下過雪了。

It had already snowed before Monday.

如果我們要強調較早發生事件的連續性，我們可以用過去完成進行式。占去完成進行式和現在進行式惟一不同的地方是 verb to have 的地方一定要用had 。以下是一些過去完成進行式的例子：

1. I had been watching TV before you called me.

2. I had been working hard in a company for many years before I went to college.

3. He had been studying before he went to class.

4. He had been driving all day before he went to sleep.

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