过去将来完成进行时例句
要用过去将来完成进行时态进行造句，首先要了解过去将来完成进行时态的基本结构。完成进行时态是英语中的四大时态之一，它的结构是have/has been doing。而过去将来完全进行时态的结构就是would have been doing。
如：He said he would have been doing his work.
要用过去将来完成进行时态进行造句，首先要了解过去将来完成进行时态的基本结构。完成进行时态是英语中的四大时态之一，它的结构是have/has been doing。而过去将来完全进行时态的结构就是would have been doing。
如：He said he would have been doing his work.