現(xiàn)在完成時語法ppt-wenkub
2022-10-31 01:51:05 本頁面
【正文】 eturned from abroad. (含義是 :現(xiàn)在已在此地 ) 2. 現(xiàn)在完成時可以用來表示 發(fā)生在過去某一時刻一直持續(xù)到現(xiàn)在的動作和狀態(tài) ,常與表示 持續(xù)的時間狀語連用 . 表示持續(xù)動作或狀態(tài)的動詞多是 延續(xù)性動詞 。 I have just bought a novel。 Have you eaten up all the food already ? “從來不” 用在否定句中 ,放在句中。the Present Perfect Tense 現(xiàn)在完成時 助動詞 have (has)+過去分詞 done past now Yesterday , we cleaned the classroom. Now , the classroom is clean because we have cleaned it. 用法 1 強調(diào) 過去發(fā)生的動作 對 現(xiàn)在產(chǎn)生的 結(jié)果或影響 1. My father bought many books for me yesterday . Now , I have a lot to read because ________________________________ 2. I saw this film last week. Now, I know this film because I_____________________. 3. I did my homework yesterday. Now, I can give it to the teacher because I______________ my father has bought many books for me. have seen it before have done it. “仍然，還 ” 用在疑問句和否定句中，放在句末。 Is he famous ?I have never heard of him . ever never “曾經(jīng)”通常用于疑問句和肯定句中 ,放在句中。 She began to work in 2021. She still works here now. She has worked at this school for 7 years. now past I began to teach English at this school five years ago. I have taught English at this school for five years. 用法 2： 過去發(fā)生的動作一直 延續(xù) 到現(xiàn)在。 I haven’t seen her these days. Mary has been ill for three days. I have lived here since 1998. 3. 現(xiàn)在完成時往往同表示不確定的過去時間狀語連用 ,如 already, yet, just, before, recently, still, lately等標志詞 He has already got a chance to go abroad. I haven39。 如不能說： He has borrowed the book for two months.(ⅹ ) 但可以說： He has kept the book for 2 months. 或： It has been 2 months since he borrowed the book. 或： Two months has passed since he borrowed the book. 這些瞬間動詞常與它對應(yīng)的可以表示時間段的詞語進行互換。 有些動詞的過去分詞與原形是一樣的 : runranrun ecamee beebecamebee overeovercam
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