英语时态语态介绍.ppt

Tips 先发生的动作用过去完成时，后发生的动作用一般过去时，过去某时刻正在进行的动作用过去进行时。时态综合运用的典型例题： (91)The students ____ busily when Miss Brown went to get a book she ____ in the office. A. had written; left B. were writing; has left C. had written; had left D. were writing; had left Tom flew home, but his father had already died. D 其他用法 hope, expect, suppose, think, want, wish等动词的过去完成时表示过去未实现的愿望、计划或打算。例如： They had hoped to be able to arrive before ten. Like every school boy I had thought that going into space as an astronaut must be the best job in the world. 过去完成时还用于状语从句的两个常用句型的主句中：hardly…when(刚……就)和 no sooner…than(刚……就)。例如： Hardly had it grown dark when he realized it was too late to return home. Tips 在before, after等引导的时间状语从句中，由于这些连词本身已经表示出时间先后，所以主句或从句的谓语动词可以用一般过去时来代替过去完成时。例： She and her family hid away for nearly twenty-five months before they were discovered. 在when引导的时间状语从句中，谓语动词的动作发生后，主句谓语动词的动作紧挨着发生，这时两者均用一般过去时。例如： When he heard these words, Jim panicked and ran to the raft. 如果从句中有明确的表示过去时间的状语，则常用一般过去时。例如： He said he was born in 1991. X.现在完成进行时(The Present Perfect Continuous Tense) 基本用法 表示动作从过去某一时间开始一直持续到现 在。这个动作可能刚终止，也可能还在进行。 如：I haven’t been sleeping well since I returned home. (04京)Now that she is out of a job, Lucy ____ going back to school, but she hasn’t decided yet. A. had considered B. has been considering C. considered D. is going to consider B 现在完成进行时与现在完成时的区别 现在完成进行时的动作不一定已经完成，很可能持续下去，而现在完成时一般表示动作已经完成。例如： You’ve been designing solar racing cars for a long time. I’ve designed five or six different cars so far. 2. 现在完成进行时往往表示动作在重复，而现在完成时一般不表示动作的重复。例如： I’ve been taking part in races for about four years. How many races have you taken part in? 3.现在完成进行时与所有进行时态一样带有感情色彩，可使表达显得生动，而现在完成时往往只标明一个事实，一种影响或结果，不带感情色彩。例如： What have you been doing? You look fed up. （你一直在干什么呀？你看上去很不爽。） Tips –过去完成进行时 表示动作从过去某时开始，一直延续到过去另一时间。例如： Finally, after he had been wai