高职高考英语时态（五）

13. 过去完成进行时：had been doing

表示某一动作一直延续到过去某一时间，是否继续下去，应视上下文而定。

例：The old clock had been being taken apart of and fixed up again for several times by my 10-year old son before I came back home.

我回到家之前，我10岁大的儿子已经把这个旧钟表拆卸并重新组装了好几回了。

14. 过去将来进行时：( would be doing )

表示就过去某一时间而言，将来某一时间或时间段正在进行的动作，主要用于从句中。

例：The government promised that a new highway would be being built next July.

政府承诺说第二年7月将有一条新的高速公路正在修建。

15. 过去将来完成时：(would have done)

表示就过去某一时间而言，将来某一时间之前所完成的动作。常用在虚拟语气中，表示与过去事实相反。

例：I believed by the end of that year an advanced version of that software would have been developed, but I was wrong.

我坚信到那年年底为止，那个软件的新版本将被开发出来。但是我错了。

16. 过去将来完成进行时：(would have been doing)

表示就过去某一时间而言，将来某一时刻之前一直在进行的动作，是否继续下去，应视上下文而定。

例：They said that by the end of the following month, the project would have been being worked for 3 years.

他们说到第二个月底为止，这项工程就已经不停地进行了3年了。