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狀語從句,從句用一般過去時,主句用現(xiàn)在完成時確定。......之前;......時候;;......之后。after【答案】 C 【解析】【分析】句意:——自從中國建立三沙市以來,當(dāng)?shù)氐纳顥l件有了很大的改善。C.when32.— The local living conditions(條件) have improved a lot ________________ China set up the city of Sansha. — And more and more people would like to go there for business.A.除非保護(hù)水資源,否則我們沒有水喝,所以用unless,故選D。unless【答案】 D 【解析】【分析】句意:科學(xué)家說,除非我們保護(hù)水資源,否則我們將沒有水喝。beforewhenif注意祈使句+or/and+簡單句結(jié)構(gòu)。根據(jù)句意和句子結(jié)構(gòu)可知,此處是祈使句+or/and+簡單句結(jié)構(gòu),祈使句表示條件,后面的簡單句表示結(jié)果,當(dāng)結(jié)果與條件意思一致時,用and連接,當(dāng)結(jié)果與條件意思相反時,用or;根據(jù)句意可知,此句條件和結(jié)果意思是相反的,所以應(yīng)該用or,故選B。and【答案】 B 【解析】【分析】句意: 當(dāng)你學(xué)習(xí)英語時,要用它,否則你會失去它。C.orll lose it. A.30.When you39。 【點評】考查連詞辨析。;……時候;;。D.C.B.29.What shall we do___________ it rains tomorrow? A.盡管他贏得了5億英鎊,但是他還住在小公寓,所以用though,盡管,故選B。Because【答案】 B 【解析】【分析】句意:雖然他贏得了5億英鎊的獎金,但他仍然住在一套小公寓里。SinceThoughIf 【點評】考查連詞辨析,首先識記連詞詞義,然后根據(jù)句意確定。;;;。D.C.B.27.___________ the situation in Iraq is very dangerous, the woman reporter still keeps on working there. A. 【點評】考查連詞的用法。、又、和,既可以表示并列也可以表示遞進(jìn)。表示轉(zhuǎn)折。C.B.you will be healthier. A.D.as soon asB.whenD.C.B.t watch the live match on TV yesterday evening. A.D.neither…norB.both…andD.C.B.should be finished soon. A.nor【答案】 B 22.This is the most important task butandor as【答案】 C 21.Giveme your address, _______I39。C. asB. sot express its beauty.A.as far as【答案】 C 20.—Could you tell me more about the movie Frozen II __________ you have watched it. —No problem. But you39。as long aseven thoughas a resultll find it39。D.whileB.beforeD.thoughB.becauseD.sinceB.althoughunless【答案】 D 16.Tom39。C.when15.The situation is being more serious ________________ we do something to save the Earth. A.what【答案】 B 【解析】【分析】句意: 你能告訴我歌手是否會來我們學(xué)校嗎?whether...or not,固定搭配,是否 , 故選B。C.whetherA.D.orB.and根據(jù)上下文的聯(lián)系確定所使用的連詞。故選B。when什么時候;unless除非;while當(dāng)……時候;if如果,根據(jù)—— Is your WeChat account (賬戶) safe?—Yes,D.whileB.when12.—Is your WeChat account (賬戶) safe? —Yes, even my father can39。 【點評】此題考查連詞辨析。while當(dāng)……時候;though雖然;because因為;unless除非,故選A。unless【答案】 A 【解析】【分析】句意:當(dāng)你父母活著時愛他們。becausethoughwhile11.Love your parents __________ they are alive. Don39。 【點評】考查連詞辨析。表示條件; D: if如果,表示假設(shè)。if【答案】 A 【解析】【分析】句意:這部電影似乎很有趣,我們都想看。C.but10.The film seems interesting ______ we all want to see it. A. 【點評】考查連詞辨析。根據(jù) the time on the trip from Lianyungang to Qingdao now,可知是指上文提到過時間,要用that。it【答案】 C 【解析】【分析】句意:新高速鐵路開通后,連云港到青島的時間比過去少了很多。thatthisone理解連詞的意思和用法,根據(jù)前后句的關(guān)系,選擇正確的連詞。根據(jù)前后句意思,可知前后句是轉(zhuǎn)折關(guān)系,要用though,故選B。Because【答案】 B 【解析】【分析】句意:雖然