unit12

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　　　　　　我们很少发现他出去。
　　　　　　When she woke up, she found herself in hospital.
　　　　　　她醒来的时候发觉自己在医院里。
　　(2) 现在完成进行时的用法
　　　　[说明] 现在完成进行时表示从过去开始，一直到现在的动作，这个动作可能刚刚结束，也可
　　　　 能还要继续下去，常与表示一段时间的状语连用。
　　　　 例如：They have been working in America ever since 1999.
　　　　　　　从1999年他们就一直在美国工作。
　　　　　　　Where have you been? I've been looking for you for a long time.
　　　　　　　你去哪儿了？ 我一直找了你好长时间。
　[练习题]
　　　　1. The policeman ___ who had stolen the bike at last, didn't he?
　　 　　　A. found out 　　B. found 　　C. discovered 　　D. tested
　　　　2. He didn't attend the party yesterday ____his mother's serious illness.
　　　　　A. because 　　B. because of 　　C. as a result 　　D. in fact
　　　　3. Mr Zhang ___in our school ever since 1979.
　　 　　 A. was teaching 　　B. is teaching 　　C. was taught 　　D. has been teaching
　　　　4. He lived in a room ___ window faced the south.
　　 　　A. whose 　　B. who 　　C. who's 　　D. which
　　　　5. You'd better ___here.
　　 　　A. not smoking 　　B. to smoke 　　C. not smoke 　　



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unit12