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高考英語常考句式（04）

——it is +時間 + since (before, when)…

請注意以下三個句式的區別和意思上的差異（其中的 is 根據情況可以有其他時態形式）：

It is + 時間段 + since… 的意思是“自從……以來有一段時間了”。

It is + 時間點 + when… 的意思是“當……的時候時間是……”。

It is + 時間段 + before… 的意思是“在……之前有一段時間”。

請看以下用例：

It’s ten years since they got married. 他們結婚到現在已經十年了。

It was past one o’clock when he came in. 他回來時已經一點多了。

It won’t be long before they understand each other. 過不了多久他們就會互相了解的。

有時翻譯可以比較靈活：

It’s a long time since I met you last. 好久不見了。(直譯：自上次見到你以來有很長一段時間了。)

It’s about three years since I last played basketball. 我差不多有三年沒有打籃球了。(直譯：自從我上次打籃球以來已差不多有三年了。)

請看有關高考題(答案為DDBCDC)：

1. That was really a splendid evening. It’s years _________ I enjoyed myself so much. (安徽卷)

A. when              B. that                   C. before                D. since

2. It was some time _________we realized the truth. (山東卷)

A. when              B. until                  C. since                  D. before

3. —Did Jack come back early last night?

—Yes. It was not yet eight o’clock _________he arrived home. (福建卷)

A. before             B. when                C. that                    D. until

4. Scientists say it may be five or six years _________it is possible to test this medicine on human patients. (福建卷)

A. since               B. after                 C. before                D. when

5. It was evening       we reached the little town of Winchester. (天津卷)

A. that                  B. until                 C. since                  D. before

6. It _________ long before we _________ the result of the experiment. (上海春)

A. will not be; will know                    B. is; will know

C. will not be; know                          D. is; know

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