过去时:
He was to go.
当时他是预定去的。(不定式的一般式)
He was to have gone.
他本来是预定要去。(不定式的完成式)
第一句并没有告诉我们计划是否执行了,第二句则用来表示一个未实现的计划。又如:
The Lord Mayor was to have laid the foundation stone but he was taken ill last night so the Lady Mayoress is doing it instead.
市长大人原订要来行奠基礼,可他昨天晚间病了,所以市长夫人替他代行。
B was/were+不定式结构可用来表达一种命运的意念:
He received a blow on the head. It didnt worry him at the time but it was to be very troublesome later.
他的头上挨了一下子。他当时不感到怎么样,但是这事后来竟变得很麻烦。(结果是很/证明麻烦的)
They said goodbye,little knowing that they were never to meet again.他们相互道别,根本没有想到竟再也不能相见了。(命运注定不再相见)
C be about+不定式结构表示即将发生的动作:
They are about to start.
他们就要出发了。(他们正准备开门。)
加上副词just能使将来更加具有即时感:
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