摘要： 一般过去时和过去进行时 比较下列句子: * I wrote a letter yesterday. * I was writing a letter yesterday. (一直在写信.但不一定写完了) * I was writing a letter when he came in. 从以上例句可以看出.一般过去时常常用来表示过去的一个有结果的动作.而过去进行时1)强调动作在某一时刻正在发生2)动作在过去一段时间内一直在发生.无论哪一种情况都不强调动作的结果.再如: *He a book about China last year, but I don’t know if he it. wrote; has finished B. was writing; has finished C. was writing; had finished D. wrote; will finish 正确选项为B. 从I don’t know if he has finished it. 推断.他去年正在写. * Tom ­ into the house when no one . A. slipped; was noticing B. had slipped; noticed C. slipped; had noticed D. was slipping; noticed 正确选项为A. slip和notice 为同时发生的动作.因此B.C为错误选项.slipped指过去有结果的动作.when no one was noticing 指他溜进去的一刹那发生的情况. * As she the newspaper, Granny asleep. A. read; was falling B. was reading; fell was reading; was falling D. read; fell 正确选项为B. * The last time I Jane she cotton in the fields. A. had seen; was picking B. saw; picked C. had seen; picked D. saw; was picking 正确选项为D.

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