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I 21.— I 根據(jù)all the time recently可知句子用現(xiàn)在完成進行時態(tài),故答案為:C。最近來的人太多了。D.C.B. all the time recently.A.20.—So much remains to be done! —Well, it39。故選D。have been masking【答案】 D 【解析】【分析】句意:你壓抑了很久,現(xiàn)在是時候放松一下了。have been maskedwill have maskedmasked19.You ____your depression for long, and now it39。 【點評】考查時態(tài),本題涉及現(xiàn)在完成進行時的應用。根據(jù)句意可知應采用現(xiàn)在完成進行時態(tài),強調動作一直在延續(xù)。D.have paintedB.was paintings/was time that。s/was time that“該是.......的時候了,從句中往往用過去時,也可以用should+動詞原形;故答案是D。因此,該是中央政府采取措施降低并控制房價的時候了。have been increasing。have been increasing。have increased。 would takes time the central government _____ some effective measures to bring them under control. A. 【點評】考查時態(tài),本題涉及現(xiàn)在完成進行時?!乙呀?jīng)連軸轉努力了一整個星期來寫我的畢業(yè)論文。D.C.B.s wrong? You look really stressed out. —I ________ the whole week preparing for my graduation paper.A.【點評】考查時態(tài),本題涉及現(xiàn)在完成進行時的應用?!堑?,志愿者們正在幫助分發(fā)捐贈的物品。D.have been pouring inC.were pouring in故選C。D.has been watchingB.has been watched14.He _______ it for two hours, and he39。故選B。分析句子可知,本句中的who指代前面的先行詞doctor Smith,是單數(shù)。D.is workingB.had workedin Shanghai for more than ten years, is considering working in Huaian, but he hasn39?!军c評】考查動詞時態(tài),本題涉及現(xiàn)在完成進行時的應用。had been struggling【答案】C 【解析】【分析】句意:在過去的三個月里他每天晚上都在努力學英語語法。has been strugglingstruggledstruggles【點評】本題難度不大,重點把握句意和熟知現(xiàn)在完成進行時的內涵。根據(jù)句意說明是問對方這些年在做什么,因此使用現(xiàn)在完成進行時表示。這些年你一直在做什么?—自從我畢業(yè)以后我嘗試了很多事情。have you been doing【答案】D 【解析】【分析】考查時態(tài)。did you dowere you doinghave you doneve tried many things since we left school. I39。故D正確。本句的時間狀語是“for decades幾十年來”,該時間狀語通常和現(xiàn)在完成的有關時態(tài)連用,本句強調這幾十年來大山一直努力把中國相聲和西方的脫口秀相結合。D.C.B.10.Dashan, who_________crosstalk, the Chinese edic tradition, for decades, wants to mix it up with the Western standup tradition. A.故知選D項。表示持續(xù)到現(xiàn)在并且仍在進行的動作,應用現(xiàn)在完成進行時?!@不吃驚。D.will have been livedB.has been living【點評】考查時態(tài)9.— He speaks Chinese very well.— It39?,F(xiàn)在完成進行時通常表示過去發(fā)生的事情延續(xù)到現(xiàn)在,而且還在繼續(xù)發(fā)生,強調事情的延續(xù)性和反復性。had done【答案】 B 【解析】【分析】考查時態(tài)。C.have been doing8.I ________ my homework for four hours, but I am not sure whether I