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新一轮中考复习备考周期正式开始， 1)过去进行时和一般过去时的基本差别是，过去进行时表示一个正在进行的动作，而一般过去时表示一个业已完成的动作。 试比较下面的句子： She was knitting a sweater for Tom.她在给汤姆织一件毛衣。 She knitted a sweater for Tom.她给汤姆织了一件毛衣。 He was doing his homework in the afternoon.下午他在做作业。 He did his homework in the afternoon.下午他把作业做完了。 I was writing an essay.我在写一篇论文。(可能还没写完) I wrote an essay yesterday.我昨天写了一篇论文。(已写完) They were building a skyscraper.他们在建一座摩天大楼。(在修建) They built a skyscraper.他们盖了一座摩天大楼。(已盖好) 2)有些动词本身并不表示动作完成，如rain,snow,cough,wear,feel,wait,stay,work等，这时用两种时态意思上差别不大： It snowed all night.下了一整夜的雪。 It was snowing all night. She wore a blue coat.她穿着一件蓝外套。 She was wearing a blue coat. He felt a bit uneasy.他感到有点不自在。 He was feeling a bit uneasy. We stayed in a hotel.我们住在旅馆里。 We were staying in a hotel. 3)用进行时态有时有感情色彩，特别是带有always,forever,constantly这类状语时，如： He was always ringing up.他总是给我打电话。(厌烦) She was always working.她总是不停地干活。(赞扬) The old lady was forever grumbling.这老太太老是嘀嘀咕咕。(厌烦) He was constantly changing his mind.他总是改变主意。(不以为然) 4)有时用进行时表示现在的想法，可以显得客气一点，如： I was wondering whether you could give me some advice.不知你能否帮我出点主意。 I was thinking maybe he could go by taxi.我在想或许他可以坐的士去。 I was hoping you could reconsider our proposal.我希望你能再考虑一下我们的建议。 (责任编辑：admin) |