1.The students have read about twenty English novels in the past three years. 2.I have my homework finished . 3.He has painted the front door green. 4.I've written an article.5.It has been raining these days. 6.I have come from Shanghai.（從上海來） 7.You've read very well. （強調(diào)一次剛完成的動作） 8.I have forgotten..（仍沒想起來,可能已回憶起來了） 9.The book has been written in simple English..（表動態(tài),已用英語寫成） 10.Every time I have seen him, he's been reading.(強調(diào)兩個動作同時進行） 11.He has gone .（強調(diào)動作和時間） 12.He won't come till the play has begun.（戲已開始） 13.After I have left school, I'll go to college.（強調(diào)畢業(yè)后,兩個動作可能有間隔） 14.It's been a long time since I saw you last. 15.Where have you been?(去了哪） 16.He has lived in New York for eight years. 17.He has been called a thinker.18.You've heard what I said. (你聽見我的話了） 19.I've seen him this morning.(還在上午的時間里)20. I've lost my pen. (筆還沒找到）