時(shí)間狀語(yǔ)從句的引導(dǎo)詞-閱讀頁(yè)
2024-08-23 01:12本頁(yè)面
【正文】 (1) 現(xiàn)在完成時(shí)的主句+since引導(dǎo)的一般過去時(shí)態(tài)的時(shí)間狀語(yǔ)從句。// They have been friends ever since they were in grade school. 他們從小學(xué)起就一直是好朋友。例如：It is two years since I became a postgraduate student. 我成為研究生已經(jīng)有2年了?！ ∽⒁猓簊ince做介詞時(shí)也表示“自從……以來”，其具體用法有兩種情況： (1) since+表示過去某個(gè)時(shí)間點(diǎn)的詞匯(如具體的年、月、日期、鐘點(diǎn))。She’s been skiing since childhood. 她從幼時(shí)起就開始滑雪?！ ?2) since+表示一段時(shí)間的詞匯+ago。 [考題11] They ____ friends since they met in Shanghai. A. have made B. have bee C. have been D. have turned [答案] C [解析] 題干中的since表示“自從……以來”，主句中的謂語(yǔ)動(dòng)詞應(yīng)該表示從他們?cè)谏虾Ｏ嘤鲋两竦某掷m(xù)性的動(dòng)作，因此下劃線處應(yīng)填入可以表示持續(xù)性狀態(tài)的have been(其他選項(xiàng)中的made、bee、turned所表示的動(dòng)作都不能延續(xù)，意味著結(jié)果)。①.when當(dāng)......時(shí)候引導(dǎo)的時(shí)間狀語(yǔ)從句，其動(dòng)詞既可以是延續(xù)性動(dòng)作的動(dòng)詞，也可以是瞬間性動(dòng)作的動(dòng)詞,如： _________ the students heard the teacher39。(從句動(dòng)作發(fā)生在前) ② as當(dāng).......時(shí)候或一邊.......一邊引導(dǎo)的時(shí)間狀語(yǔ)從句其動(dòng)詞的動(dòng)作是延續(xù)性的，而且側(cè)重表示主句和從句的動(dòng)作并相發(fā)生： We were having breakfast __________ she was bing her hair. 她梳頭時(shí)我們?cè)诔栽顼?。如： I can learn ________ I work. 我可以邊工作邊學(xué)習(xí)。ll be back _____________. 你離開之前我就會(huì)回來?！ ?7) since引導(dǎo)的時(shí)間狀語(yǔ)從句，從句的謂語(yǔ)動(dòng)詞通常為一般過去時(shí)，主句的謂語(yǔ)動(dòng)詞通常為現(xiàn)在完成時(shí) We __________ never __________ (meet) since we ___________ (graduate) from the college. 大學(xué)畢業(yè)后我們就再?zèng)]見過面。not … until通常與after進(jìn)行轉(zhuǎn)換。t go with you until(till) I finished my homework. =_________. 等我做完作業(yè)我才和
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