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故選B。D.beingB.bee【點評】考查特殊疑問句的辨析。詢問的是從什么時候開始,也就是時間長度。D.C.B. A.【點評】現(xiàn)在完成時的時間狀語要掌握。D.C.B.15.All the students _______ very hard over the last three years.A.故選D。has been【答案】 D 【解析】【分析】句意為“Mike過去是尖子生,但自從迷上電子游戲以來成績落后了”。C.has fallenbehind since he lost himself in puter games.A.14.Mike used to be a top student, but he ——沒關(guān)系.會議只開了5分鐘,請這邊走。C.has endedA.m sorry for being late.—Never mind. The meeting ______for only 5 minutes. This way, please.has been open【答案】 D 【解析】【分析】open是非延續(xù)性動詞,和表示一段時間的時間狀語連用必須轉(zhuǎn)化為延續(xù)性動詞be ,本句應用現(xiàn)在完成時態(tài),故選D。has openedhas been openedopened 【點評】考查短語辨析,注意平時識記其區(qū)別,理解句意。根據(jù)She39。主語是she,所以用has,排除C、D?!呀?jīng)去武漢了。D.have gone toB.has gone to Wuhan. She39。t seen her for days. —She【點評】考查動詞的時態(tài),以及has been to ,has gone to ,has been in的含義和用法。has been to”去過某地“,現(xiàn)在已經(jīng)回來了;has gone to”去了某地“,還沒有回來;has been in”待在某地“一段時間。has gone to。 has been in has been toC.B. has been in10.—Where is your mother?—She ______ Australia and she ______ Sydney for two weeks.A.【點評】本題考查現(xiàn)在完成時。主語he是三人稱單數(shù),用has gone to。Have been to去過某地(已回);have been in在……;have gone to去了某地(未回)。D.He has gone to ShanghaiB.He has been to Shanghai主語是he,用has,故選B.【點評】考查現(xiàn)在完成時,注意其常與for+一段時間連用。他教歷史將近20年了。D.C.B.history for nearly 20 years.A. 【點評】此題考查現(xiàn)在完成時的用法。had read【答案】B 【解析】【分析】句意:——露西,你認為《金銀島》怎么樣?——它是如此令人激動以至于我讀了兩次。C.have reads so exciting that I _______ it twice.A.D.C.B.6.I am surprised at the new look of my hometown,for it _____ a lot over the years.A. 【點評】此題考查現(xiàn)在完成時。yet也,常和現(xiàn)在完成時的否定結(jié)構(gòu)連用,可知此處用現(xiàn)在完成時。根據(jù) Oh. What a pity!可知我沒有看過?!丁aven39。t watchC.didn39。t watch5.—The drama s