【正文】 2. 我五年前就認識李雷了。 一般不能用于進行時的動詞也不能用于 現(xiàn)在完成時行時。 They have bought a dictionary. (They bought a dictionary and they have it now.) 他們買了一本字典。t. Has Tina read Treasure Island yet? Yes, she has. She thinks it39。 現(xiàn)在完成時與一般過去時在意義上 的區(qū)別舉例如下： I have cleaned my room. (My room is clean now.) 我已經(jīng)打掃過我的房間了。 (說話時仍是冬天 ) 4. 現(xiàn)在完成進行時和現(xiàn)在完成時 都可以表示 “從過去開始一直持續(xù)到現(xiàn)在”這一概念 , 有時 兩者可以互相代用 , 但前者多用于口語。 5. 我剛丟了我的歷史書。 (說話時在上午 ) I saw him this morning. 今天上午我遇見了他。 不能說 : *He has e to Beijing for two years. *He has bought that book for three weeks. *He has joined the Army for one and a half years. *His grandma has died for nine months. * I have received his letter for a month. 可以說 : He has been in Beijing for two years. He has had that book for three weeks. He has been in the army for one and a half years. His grandma has been dead for nine months. I haven39。ve already finished reading it. It was really good. 現(xiàn)在完成時： 表示過去發(fā)生或已經(jīng)完成的某一動作對現(xiàn)在造成的影響或結(jié)果，或從過去開始一直延續(xù)到現(xiàn)在的動作或保存的狀態(tài)。 ( 1).for+表示 一段 時間的短語 ( 2).since+表示 過去時間點 的詞語 ( 3).since+表示過去時間的時間狀語 從句 have been a teacher ______ a year. He has been at this school _______ 1992. We have learned 1,000 English words _______ we came to this school. for since since 現(xiàn)在完成時句中常見的時間狀語 , 不能是具體 的過去時間。 ? 一般過去時： 一般過去時只表示過去的動作或狀態(tài)，和現(xiàn)在不發(fā)生關(guān)系（即動作或狀態(tài)在現(xiàn)在已經(jīng)結(jié)束），它可以和表示過去的時間狀語連用。 He has been drinking coffee. 他一直在喝咖啡。 Mother hasn’t e home yet. 媽媽還沒回來。 動詞構(gòu)成： have/has+v過去分詞 have breakfast I have just had my breakfast. (現(xiàn)在我不餓 ) I’m not hungry now moved here in 2021 I still live here I have lived here for three years. I have lived here since 2021/three years ago. now past 2. 現(xiàn)在完成時動詞可以表示開始于過去持續(xù) 到現(xiàn)在 (也許還會繼續(xù)進行下去 )的動作或狀態(tài)。 1) I have studied English since last year. 我從去年開始學習英語。 Haven’t you read The Call of the Wild yet? 你還沒讀過 《 野性的呼喚 》 嗎？ She has already finished her work. 她已經(jīng)把工作做完了。 改寫句子