人教版英語八下unit 8《have you read treasure》（section a-2）課件-文庫吧
2024-11-18 16:07 本頁面
【正文】 ears since he came to Beijing. It is three weeks since he bought that book. It is one and a half years since he joined the Army. It is nine months since his grandma died. 3. 現(xiàn)在完成時(shí)把過去的動(dòng)作和現(xiàn)在的結(jié)果聯(lián)系起來， 一般過去時(shí)只限于表示過去的動(dòng)作本身 , 與現(xiàn)在 的結(jié)果無關(guān)。 現(xiàn)在完成時(shí)與一般過去時(shí)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。 I cleaned my room last week. (I did it in the past.) 我上周打掃了我的房間。 Father has gone to Amoy. (He went to Amoy and he is not here now.) 爸爸已經(jīng)去廈門了。 They have bought a dictionary. (They bought a dictionary and they have it now.) 他們買了一本字典。 注意 : 現(xiàn)在完成時(shí)不能和明確指出時(shí)間的狀語 (如 : yesterday, last, year, in 1976, two days ago, just now, when she came in 等 )連用 ， 但可以和不明確指出時(shí)間的狀語 (如 : already, yet, ever, never, sometimes, always, often, before, once, twice, recently, lately等 )連用 ； 也可以和表示包括現(xiàn)在在內(nèi)的時(shí)間狀語 (如： today, this morning, this week, this year等 )連用 。 ( 1).for+表示 一段 時(shí)間的短語 ( 2).since+表示 過去時(shí)間點(diǎn) 的詞語 ( 3).since+表示過去時(shí)間的時(shí)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(shí)句中常見的時(shí)間狀語 , 不能是具體 的過去時(shí)間。 ever just already yet . Have you _____been to Japan? I have _____ finished my homework. I have finished my homework ______. I haven’t finished my homework ____. B. just, already, yet, before/ ever, never有此 類副詞時(shí) ,常強(qiáng)調(diào)動(dòng)作完成 ,不強(qiáng)調(diào)動(dòng)作的持續(xù) . already “已經(jīng)” 。 yet “仍然 , 還” 這兩個(gè)副詞常常用于完成時(shí)態(tài) , 其中 already 常用于肯定句 , yet常用于否定句和疑問句中。 如 : Jim has already finished his work. Jim已經(jīng)把他的工作做完了。 Mother hasn’t e home yet. 媽媽還沒回來。 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。 I haven’t read the story yet. 我還沒讀過這個(gè)故事。 Have you met him before? 你從前曾見過他嗎？ Lily has always been a good student. Lily一直是
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