之前我們辨析了過去將來完成進行時、現(xiàn)在和將來完成進行時的區(qū)別。主要是得分清所說事件發(fā)生在何時。今天我們來做些練習(xí)鞏固一下。這次不是填空題，而是改寫題，請將以下句子改寫成現(xiàn)在完成進行時和將來完成進行時。

練習(xí)題：

（1）By that time he would have been working here for 30 years.那時他已經(jīng)在這工作了30年了。

（2）I would have been sitting behind my sister in classroom. 在教室里我會坐在我姐妹后面。

（3）They would have been reading books for two weeks. 他們會看兩個星期的書。

（4）She would have been thinking about it by the end of the year. 年底之前她會一直考慮這件事。

答案：

（1）
過去將來完成進行時：By that time he would have been working here for 30 years.
現(xiàn)在完成進行時：He has been working here for 30 years.
將來完成進行時：By that time he will have been working here for 30 years.

（2）
過去將來完成進行時：I would have been sitting behind my sister in classroom.
現(xiàn)在完成進行時：I have been sitting behind my sister in classroom.
將來完成進行時：I will have been sitting behind my sister in classroom.

（3）
過去將來完成進行時：They would have been reading books for two weeks.
現(xiàn)在完成進行時：They have been reading books for two weeks.
將來完成進行時：They will have been reading books for two weeks.

（4）
過去將來完成進行時：She would have been thinking about it by the end of the year.
現(xiàn)在完成進行時：She has been thinking about it by the end of the year.
將來完成進行時：She will have been thinking about it by the end of the year.

本篇的練習(xí)到此為止，同學(xué)們都記清三個時態(tài)的用法了嗎？