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7. I had written my composition before the bell rang.

【過去完成時】表示在過去某個時間之前發生的動作。關于“過去完成時”，有不少同學認為它是指“過去完成的動作”，這是非常錯誤的理解。通俗一點解釋就是：兩個動作都發生在過去，較早的那個動作用過去完成時，另一個用一般過去式。它的實質就是“過去的過去”。

【構成】had +過去分詞(動詞-ed)

【常用的時間短語】by the time…, by the end of等。例如：

The train had left by the time we got to the station.

He had learned 3000 English by the end of last term.

The children ran away because they had broken the window.

Tom was disappointed that most of the guests had left when he arrived at the party.

He told me that he had broken his glasses.

【注意】當兩個動作先后分明，誰先誰后一眼就看出來時，在先的那個動作則不必用過去完成時，如：

He came in and sat down, and then took out his pen.

或者有after, before時，如：

After we said goodbye to them, we left the village. 我們向他們道別后，離開了村莊。

I heard a sudden cry just before I turned off the light. 就在我熄燈前，我聽到突如其來的一聲叫喊。

8. She said she would write a composition next week.

【過去將來時】表示從過去某個時間看，將要發生的事情。

【構成】would +原形動詞

【常用的時間短語】the next day, the following week, in the future等。

He said that he would go to college next year.

I thought they would not come to our party if we didn’t invite them.

【注意】并非所有的would都表示過去將來時。請看：

Would you come and have tea with us?

I would like to watch T V now.

Whenever I caught cold, she would send for a doctor.

過去將來時的其他表示法。

(1) was (were) going to +原形動詞：

He told us that he was going to spend his summer holidays in the countryside. 他告訴我們他打算到鄉下去度暑假。

(2) was (were) to +原形動詞：

I was told that my girl friend was to see me the next day. 我得知我的女朋友第二天要來看我。

(3) was (were) about to +原形動詞：

As the girl was about to turn to the next customer, the old lady handed her the little package. 當姑娘就要轉向下一個顧客時，老太太把小包裹遞給了她。