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且進行時態(tài)更能體現(xiàn)出目前的狀況,故使用現(xiàn)在完成進行時最好;第二空是虛擬語氣中“it39。s time that +did/ should do”的句式使用,故選D項。13.I ________ my homework for four hours, but I am not sure whether I can hand it in tomorrow.A.have doneB.have been doingC.had been doingD.had done【答案】 B 【解析】【分析】考查時態(tài)。句意:四個小時以來,我一直都在做家庭作業(yè),但是我不確信我是否能在明天上交它?,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。故B正確。【點評】考查時態(tài)14.The western countries have been _________ Christmas for many years. A.celebratingB.celebrateC.celebratesD.celebrated【答案】 A 【解析】【分析】have/has been+現(xiàn)在分詞是現(xiàn)在完成進行時;句意:西方國家很多年來一直在慶祝圣誕節(jié)。故選A。15.I39。m tired out. I_______ all afternoon and I don39。t seem to have finished anything.A.shoppedB.have shoppedC.had shoppedD.have been shopping【答案】 D 【解析】【分析】句意:我很累。我整個下午一直在購物而且好像什么事也沒做成。用現(xiàn)在完成進行時表一直發(fā)生的動作。16.— What39。s wrong? You look really stressed out. —I ________ the whole week preparing for my graduation paper.A.workB.have workedC.have been workingD.worked【答案】 C 【解析】【分析】句意:—你怎么了?看起來真的壓力很大。—我已經(jīng)連軸轉努力了一整個星期來寫我的畢業(yè)論文。根據(jù)本題題意,“我”已經(jīng)從一周前開始,持續(xù)工作直至現(xiàn)在(有表達時間段的提示短語the whole week),唯有現(xiàn)在完成進行時可表達這一含義,應選用have been doing的結構,故選C。 【點評】考查時態(tài),本題涉及現(xiàn)在完成進行時。17.— You look tired.— I ___________ clothes all day. A.washedB.have washedC.was about to washD.have been washing【答案】D 【解析】【分析】句意:——你看上去很累?!蚁戳艘惶斓囊路4颂幈硎緞幼饕徽於荚谶M行,一直在持續(xù),用現(xiàn)在完成進行時,故選D?!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。18.—How much do you know about the trade war between China and America?—Well, the newspapers ________ it in the past few weeks. A.reportB.will reportC.reportedD.have been reporting【答案】D 【解析】【分析】句意:——你對中美之間的貿易戰(zhàn)爭了解多少?——哦,在最近的幾周里報紙一直在報道這件事。根據(jù)時間狀語n the past few weeks可知謂語動詞用現(xiàn)在完成時或者現(xiàn)在完成進行時,故選D?!军c評】考查時態(tài),本題涉及現(xiàn)在完成進行時的應用。19.______ her ambition of being a professional singer, she _____ very hard since an early age. A.To realize, has been trainingB.16