Yesterday I had a phone call from Clint. I was very surprised. I ______ （write） to him many times but he ______ （never, reply） to my letters.
答案：had written, had never replied
解析：两个或两个以上相继发生的动作，用and或but按动作发生的先后顺序连接，此时要用一般过去时，而不用过去完成时。过去完成时则强调主语在过去的某一时刻“回顾”更早的动作。具体来说，如果在谈论过去某一事件时，又想到在这之前已发生的某事，就要用过去完成时态。
A: I need to find a dermatologist.（皮肤科医生） You’re familiar with Dr. Smith. Do you recommend her?
B: Well, I ______ （see） by her a few times. And the best I can say for her is she has interesting magazines in her waiting room.
答案：have been seen
解析：在英语中，“动作表达”的完成时态强调最近发生的事件，而“状态表达”的完成时态强调“较远的过去”经历。
It’s reported that by the end of this month the output of cement in the factory ______ （rise） by about 10%.
答案：will have risen
解析：将来完成时是以“将来”作为“坐标时间”，来表示开始于将来之前（可能是过去、现在或将来）的动作持续到将来。但动作开始的时间并不重要，关键是说话人要站在将来的某一时间来谈某一动作的完成情况。
I have entered the university for two years.
答案：错误，应改为：I have been in the university for two years，或者用一般过去时态说成：I entered the university two years ago.
He has left his native place for three years.
答案：“单一事件”完成时的肯定句不与持续的时间状语连用，动词leave（left的原形）是非延续性动词，不能跟一段时间状语（否定句除外）。
A: Are you glad you came to China?
B: Yes. Indeed. 我本来是要考虑去Tokyo or Singapore, but 我从不后 悔我的决定。
答案：I’d considered going to Tokyo or Singapore, but I’ve never regretted my decision.
解析：表示“非真实”的过去，主要是指intend，mean，hope，want，plan，suppose，expect， think，propose和wish等动词用于过去完成时，可表示过去未能实现的计划、设想、意图或希望等。
George would certainly have attended the proceedings ______.
A. had he not had a flat tire
B. had the tire no flattened itself
C. if the flat tire hadn’t happened
D. if he didn’t get a flat tire
答案：A
If Greek civilization ______ all of Europe, English wouldn’t contain so many Greek words.
A. hadn’t influenced
B. doesn’t influence
C. hasn’t influenced
D. didn’t influence
答案：A
Nelson ______ the fight, with a little more training and a better manager.
A. would win
B. had won
C. could have won
D. won
答案：C
解析：尼尔森本可以赢得这场战斗，但需要更多的训练和更好的教练。
He would rather ______ than worked last night.
A. have slept
B. has slept
C. sleep
D. slept
答案：A
解析：本题考查 would rather have done 的虚拟句型，本题相当于“He would rather have slept than have worked last night.” ，后边的 have 被省去了。
