外研选修课件M4P3 Grammar.pptVIP

要表达某一行为或某一状态从过去某一时间一直持续到现在，可用现在完成时。 I have lived in Beijing for 10 years. 我在北京住了10年了。 I have studied English for four years. 我学习英语已经四年了。 I have been in this school since 2000. 从2000年起我就一直在这所学校。 I have lived here since my childhood. 我从小就一直住在这里。 从以上例句可以看出，在表示行为或状 态从过去一直持续到现在时，要加表示 一段时间的时间状语，常用的是for或 since引导的状语。注意，for后接一段时 间，如for a long time, for 10 years等等，而since后接时间点，如since August 2003, since yesterday, since two o’clock等。 (6) have/has + done 现在完成时 The population of Jiangsu _______ to more than twice what it was in 1949. The figure is now approaching 74 million. (2009 江苏卷) 　A. has grown B. have grown C. grew D. are growing 2. He did not regret saying what he did but felt that he _______ it differently. (2009 江苏卷) 　A. could express B. would express　 C. could have expressed D. must have expressed 3. Progress ___ so far very good and we are sure that the work will be finished on time. (2009 全国II卷) A. was B. had been C. has been D. will be 4. This is the first time we _____ a film in the cinema together as a family. (2009 陕西卷) 　A. see B. had seen C. saw D. have seen 5. You ______ buy a gift, but you can if you want to. (2010 湖南卷) A. must B. mustn’t C. have to D. don’t have to 6. When you are home, give a call to let me know you _________safely. (2010 全国I卷) A. are arriving B. have arrived C. had arrived D. will arrive 7. — When shall we restart our business? — Not until we _____ our plan. (2010 四川卷) A. will finish B. are finishing C. are to finish D. have finished 多用于肯定句， 但在下述情况也用 some。 Di