【正文】 。根據(jù)for two ，所以排除A；根據(jù)not onlybut also連接句子兩個(gè)主語時(shí)，謂語動詞就進(jìn)原則；故選B50．Mary is a kind girl. She often _______ her classmates with their homework.A．help B．helpsC．is helping D．helped【答案】B【解析】句意：瑪麗是一個(gè)善良的女孩，她經(jīng)常幫助她的同學(xué)做作業(yè)。答案為D項(xiàng)。由問句“Did you see…?”的時(shí)態(tài)可知，答語中也應(yīng)該用過去時(shí)態(tài)，排除A、C兩項(xiàng)。48． Did you see a man in black pass by just now? No, sir. I ________ my car.A．wash B．washed C．a(chǎn)m washing D．was washing【答案】D【解析】句意：——你剛才看見一個(gè)穿黑過路人的人嗎？ ——沒有，先生。leave sth in+地點(diǎn)“把某物落在某地”；forget sth忘記某事。has forgotten【答案】C【解析】【詳解】句意“穿黃色衣服的年輕人把他的鑰匙落在他的辦公室。forgot C．in。47．The young man ________yellow ___________his keys in his office. He’s forgetful and can’t enter the house.A．in。根據(jù)時(shí)間狀語從句before she got ，所以選C。46．— What do you think of the young lady?— She is hardworking. She ________ all her effort into her work before she got ill.A．has put B．put C．had put D．would put【答案】C【解析】試題分析：句意：你認(rèn)為這位小姐怎樣？她很勤奮。lived是過去式；was living過去進(jìn)行時(shí)；have lived現(xiàn)在完成時(shí)；am living現(xiàn)在進(jìn)行時(shí)。根據(jù)last week可知句子時(shí)態(tài)應(yīng)用一般過去時(shí)，排除A、B選項(xiàng)；together with her classmates在句中作狀語，主語是Alice，第三人稱單數(shù)，所以謂語動詞也要用第三人稱單數(shù)形式，排除D選項(xiàng)；故答案選C。44．Alice, together with her classmates punished for breaking the school rules last week.A．is B．a(chǎn)re C．was D．were【答案】C【解析】【詳解】句意：艾麗斯和她的同學(xué)上周因違反校規(guī)而受到懲罰。43．—You look unhappy. What’s wrong?—No one ______ me when I was in America. Maybe they all forgot me.A．phoned B．phones C．has phoned D．had phoned【答案】A【解析】句意：你看起來不開心，怎么了？當(dāng)我在美國的時(shí)候沒有人給我打電話，可能他們都忘了我吧！題干有過去的時(shí)間狀語when I was in America，需要用一般過去時(shí)態(tài)用來描述過去的一個(gè)動作。根據(jù)They don’t live here any “他們上個(gè)月搬到了成都?？疾橐话氵^去時(shí)。I am used to eating rice now. 我現(xiàn)在習(xí)慣吃米飯了。I used to get up early in the morning when I was still a high school student. 我還是個(gè)高中生的時(shí)候，常常一大早就起床。used to：后跟強(qiáng)調(diào)動作的動詞時(shí)表示“過去常?！?，used to的后面跟動詞原形；be used to表示“習(xí)慣于做某事”人作主語，后面用ving形式：be used to doing sth.；結(jié)合所給的選項(xiàng)可知，C正確。根據(jù)Before O39。Shea hosted the Joy FM program in Beijing. He_____in Hongkong for ten years.A．works B．has worked C．had worked D．would work【答案】C【解析】句意：O39。have been to意為“曾經(jīng)去過某地”，現(xiàn)在已不在那里了；have gone to意為“到某地去了”，說話時(shí)作句子主語的人不在現(xiàn)場，故選C?？疾閯釉~時(shí)態(tài)辨析。39． Where’s my father? Could tell me? He to Beijing. He’ll attend an important meeting.A．goes B．is going C．has gone D．has been【答案】C【解析】【詳解】句意：——我的父親在哪里?可以告訴我嗎?——他已經(jīng)去北京了。 lately。 since。【點(diǎn)睛】常見的現(xiàn)在完成時(shí)的標(biāo)志詞：in the last few years。根據(jù)for five minutes可知謂語動詞要用延續(xù)性動詞，e和 arrive都是短暫性動詞，be in+地點(diǎn)，表示延續(xù)性，here副詞，要把介詞省略；故選C38．—How soon will you finish the work?—In a week. We ________ about 80% of the work so far.A．have pleted B．pleted C．will plete D．a(chǎn)re pleting【答案】A【解析】【詳解】句意“你多久會完成這個(gè)任務(wù)？一個(gè)星期，到目前為止，我們已經(jīng)完成了80%的工作了”。根據(jù)called you yesterday可知，這里敘述的是昨天的事情，所以答語也應(yīng)該用一般過去時(shí)，故選B。s.A．a(chǎn)m B．was C．have been D．will be【答案】B【解析】【詳解】句意： Sam，昨天我給你打電話了，但是你不在家。the contract amount是單數(shù)第三人稱，助動詞需用has；根據(jù)句意結(jié)構(gòu)和語境，可知選C?？疾閯釉~時(shí)態(tài)辨析。故選B。根據(jù)句意語境，可知用現(xiàn)在進(jìn)行時(shí)，即“be+現(xiàn)在分詞”結(jié)構(gòu)。你媽媽在家嗎？——等一下！她正在花園里種花。A. will think（一般將來時(shí)）；B. was thinking（過去進(jìn)行時(shí)）；C. thought （一般過去式）；D. think（一般現(xiàn)在時(shí)）；根據(jù)句意，“考慮”這個(gè)動作發(fā)生剛才在他講話的時(shí)候，在過去某個(gè)時(shí)間點(diǎn)發(fā)生的動作用過去進(jìn)行時(shí)，故選B。33．—Could y