2017年职称英语模拟题:2017年职称英语理工类B级语法复习讲义(十)

　　由“shall或will的过去式should或would+动词原形”构成。

　　表示在过去某一时刻之后将要发生的动作或情况。 过去将来时态如果出现在从句中， 则主句谓语动词通常是是一般过去时。如：

　　e.g. We wanted(想要) to know (知道)when the English class would begin(开始).

　　过去将来时的否定和疑问结构：

　　It would be fine(晴朗的). 天气会晴朗起来

　　It wouldn’t be fine.

　　Would it be fine?

　　be going to do...

　　am/is going to do... →→→→→ was going to do...

　　are going to do... →→→→→ were going to

　　“be to+动词原形”

　　am/is to do ... →→→→→ was to do...

　　are to do... →→→→→ were to do...

　　“be about to+动词原形”

　　am/is about to do ... →→→→→ was about to do...

　　are about to do... →→→→→ were about to do...

　　“be+现在分词”

　　am/is doing ... →→→→→ was doing...

　　are doing... →→→→→ were doing...

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