【正文】
His mother kept on working for six hours yesterday? (4) How long did his mother keep on working yesterday? (2) How long can I keep the book? You can keep the book for two weeks.(eat為短暫性動詞)四.在可以用How long 提問表示一段時間的句子中,謂語動作通常使用延續(xù)性動詞。 He didn39。 例如:He ate until it was 。既可用作延續(xù)性動詞,也可用作非延續(xù)性動詞,因此,其肯定式和否定式均與until或 till 連用,但表示的意義往往不同。 我直到昨天才看完那個故事。t finish reading that story till (until) yesterday.(go home 是短暫性動詞) (5) Until (不用till)he had finished their homework, they didn39。t go into the room until I returned.(go into 為 短暫性動詞) 她站在那里看著,直到望不見他的身影。 我昨天在那兒一直等到中午。 (2) I waited there till (until) noon yesterday.clock last night.在肯定句中,主句要用延續(xù)性動詞;正在否定句中,until或till 可以和非延續(xù)性動詞連用,這時, until和before 同義,not...until 和 not...before 意思相同,表示直到......才,在.......以前不。till 海倫閱讀時,杰克在寫東西。 我住在北京時交了許多朋友。 她來的時候我會叫她等你的。 正當(dāng)開會的時候,他走進(jìn)了房間。例如:as所表示的動作與主句動作同時發(fā)生,具有延續(xù)的含義,一般同延續(xù)性動詞連用。由when引導(dǎo)的狀語從句其謂語動詞可以是延續(xù)性動詞也可以是短暫性動詞。when, while, as 引導(dǎo)的時間狀語從句都可表示當(dāng)……時,但也有區(qū)別。我已有兩個月沒從這個圖書館借書了。 (3)I haven39。這個小孩已有好長時間沒來我家了。 (2) The little girl hasn39。t left her hometown for twenty years. The film has been on for fifteen minutes.(T)但是,短暫性動詞的現(xiàn)在完成時的否定形式可以表示一種延續(xù)的狀態(tài),因此可以和表示一段的狀語連用。 My brother has been an armyman for ten years.(F)3. He has gone away for a week.(F) His grandfather has been dead for ten years.(T)2. My brother has joined the army for five years.(F) be a (an) + n.havebe ill (asleep)be overbe onlearn, work , read, be out of be here , be in +某地be in beebuy, get(得到)fall ill (asleep)finish, endbegin , startbegin to learn (work ,read,rain)go outget upborrowget to knowdielose延續(xù)性動詞be away (off), I have learned English for two and a half years.(learn 是延續(xù)性動詞)所以,在現(xiàn)在完成時中用法(二)中,在表示持續(xù)一段時間的句子中,應(yīng)將短暫性動詞轉(zhuǎn)化為相同意義的延續(xù)性動詞或狀態(tài)動詞。 Mr. Black has worked here since he came to China.(work 是延續(xù)性動詞) I have learned a little about Japanese. (learn 是延續(xù)性動詞)現(xiàn)在完成時中用法(二):表示始于過去某時并一直延續(xù)到現(xiàn)在的動作或狀態(tài),常與表示