【正文】
的關系確定所使用的連詞。A或者、否則;B但是,C和;D自從, 句子前后是并列關系,則應用連詞and,故選C。D.andB.or19.I39。 【點評】考查連詞辨析。D: But,但是,表示轉(zhuǎn)折。B: Because,因為,表示因果關系。But【答案】 A 【解析】【分析】句意:雖然她是個很忙的女人,但是她幫助那個男孩。HoweverBecauseAlthough掌握每個連詞的使用規(guī)則。故選B。when【答案】 B 【解析】【分析】句意:自從來到中國托尼學到很多關于中國文化的東西。C.since17.Tony has learned a lot about Chinese culture ______________ he came to China. A.故答案是D?!瓡r候;;;。D.althoughB.when16.My best friend and I haven39。祈使句+and/or+句子,固定搭配,根據(jù)句意可知是努力學習,否則會失敗,故選D。or【答案】 D 【解析】【分析】句意:Emily,你又玩游戲!努力學習,否則你將在接下來的考試中失敗。andsothenD.C.B.since【答案】 A 14.—Why do many kids spend more time playing puter games? —Because their parents are _____ busy _____ they have little time to stay with their children. A.becausewhilewhenD.butB.thoughD.C.B.s surface is covered with water, 97 percent of it is salt water in the sea. A.D.C.B.unless【答案】 D 10.She got up very early that day __________ she could catch the first train. A.C.whenuntil【答案】 C 9.The situation is being more serious ________________ we do something to save the Earth. A.C.unlessbecause【答案】 C 8.My father was preparing for his speech ______________ my mother was doing some washing last night. A.C.afterunless【答案】 D 7.My wallet dropped on the ground ________________ I was walking. A.C.untileach of us does something useful for it?