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D.butB.though理解連詞的詞義和用法,根據(jù)語境,選擇正確的連詞。根據(jù)前后句的意思,可知從句的動(dòng)作發(fā)生以后,就做主句這個(gè)動(dòng)作,要用連詞as soon as,故選A。我一回來就把它做完。before【答案】 A 【解析】【分析】句意:——杰克,你做過調(diào)查嗎?——還沒有。wheneveras soon as29.— Jack, have you done the survey? — Not yet. I am in New York now. I39。A盡管,B除非,C因?yàn)?,D直到,根據(jù)山里經(jīng)常很冷和你需要穿暖和的衣服,可知是讓步關(guān)系,故是though , 故選C。Until【答案】 C 【解析】【分析】句意:C.Unless28.______________ it is often cold in the mountains, you need to wear warm clothes. A.A是否,引導(dǎo)賓語從句,物成分,B哪一個(gè),引導(dǎo)賓語從句做定語,C引導(dǎo)賓語從句,物成分,無詞意,根據(jù)從句中不缺少成分,故主句的謂語動(dòng)詞wonder,可知是if , 故選A?!埖纫幌隆.which27.— Excuse me. I wonder ______________ the plane can land on time. — Wait a minute, please. Let me check it out.A. 【點(diǎn)評】考查連詞辨析。until【答案】 D 【解析】【分析】句意:昨天晚上珍妮直到母親回家才睡覺。C.ifher mother came home last night. A.t go to bed 注意疑問句的答語中對主句的省略。根據(jù)When did you know there would be an important meeting?此處對時(shí)間點(diǎn)提問,因此用表示直到某個(gè)時(shí)間,用于句首時(shí),用until,不用till,故答案選C。While【答案】 C 【解析】【分析】句意:——你什么時(shí)候知道有一個(gè)重要的會(huì)議的?——直到珊迪今天早上給我打電話的時(shí)候才知道的。Not untilTillSince 【點(diǎn)評】考查代詞辨析,注意because of的用法。but【答案】 B 【解析】【分析】句意: 老師因?yàn)槲覀冏蛱煸谡n堂上做的事情感到生氣。C.because of24.The teacher got angry _________________ what we had done in class yesterday. A.除非現(xiàn)在開始,否則開會(huì)會(huì)遲到,所以用unless,故選A。As【答案】 A 【解析】【分析】句意:除非你現(xiàn)在就開始,否則你開會(huì)就要遲到了。SinceIfUnless 【點(diǎn)評】考查連詞辨析,首先識記連詞詞義,然后根據(jù)句意確定。;......否則;;。D.C.B.ll do better in the ing exa