高考英语tenses

高考英语tenses内容摘要：

novel I have ever read. •在时间或条件状语从句中，现在完成时可以代替一般将来时。 如： I shall post the letter as soon as I have written it. If you have done the experiment, you will realize the theory better. Don’t get off the bus until it has stopped. (六 ) 过去进行时 (was / were doing) 过去进行时表示一个过去的动作发生时或发生后，另一个过去的动作正在进行，或表示过去反复的习惯，常与 always， continually，constantly等动词连用。 1） We were discussing the matter when the headmaster entered. 2） Whenever I visited him, he was always writing at the desk. (七 ) 过去完成时 ( had done) （ 1）表示过去某时间前已经发生的动作或情况，这个过去的时间可以用 by， before等介词短语或一个时间状语从句来表示；或者表示一个动作在另一个过去动作之前已经完成。 例如： 1） We had just had our breakfast when Tom came in. 2） By the end of last year they had turned out 5, 000 bicycles. （ 2）动词 expect, hope, mean, intend, plan, suppose, wish, want, desire等用过去完成时，表示过去的希望、预期、意图或愿望等没有实现。 例如： I had meant to take a good holiday this year, but I wasn‘t able to get away. 另外两种表示 过去想做而未做的事 的表达方式是： 1） was / were + to have done sth, 例如： We were to have e yesterday, but we couldn39。 t. 2） intended (expected, hope, meant, planned, supposed, wished, wanted, desired) + to have done sth, 如： I meant to have told you about it, but I fot to do so. * 过去完成时常用于以下固定句型： 1） hardly, scarcely, barely + 过去完成时 + when + 过去时。 例如： Hardly had I got on the bus when it started to move. 2） no sooner +过去完成时 + than +过去时。 例如： No sooner had I gone out than he came to see me. 3） by (the end of ) +过去时间，主句中谓语动词用过去完成时。 例如： The experiment had been finished by 4 o39。 clock yesterday afternoon . (八 )一般过去将来时 1. 一般过去将来时的形式 Should / would+ 动词原形 was / were + 动词 ing形式 2. 一般过去将来时。