【正文】 可知，此時(shí)不能幫媽媽洗碗，是因?yàn)檎谧鲎鳂I(yè)，應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式為：be doing。我在做作業(yè)。故選D?？疾闀r(shí)態(tài)。考查時(shí)態(tài)。故選C。根據(jù)語境及“at the moment”可知，打來電話的時(shí)候，布朗先生正在開會(huì)，時(shí)態(tài)用現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)為am/is/are doing。根據(jù)語境及“at the moment”可知，打來電話的時(shí)候，布朗先生正在開會(huì)，時(shí)態(tài)用現(xiàn)解析：C【詳解】句意：——我能和布朗先生通電話嗎？——很抱歉，他現(xiàn)在正在辦公室召開重要的會(huì)議。8．C【詳解】句意：——我能和布朗先生通電話嗎？——很抱歉，他現(xiàn)在正在辦公室召開重要的會(huì)議。根據(jù)“What’s that noise, Sam?”判斷，此處應(yīng)該用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)是：be（am/is/are）+動(dòng)詞的現(xiàn)在分詞。根據(jù)“What’s that noise, Sam?”判斷，此處應(yīng)該用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)是：be（am/解析：B【詳解】句意：——什么聲音，山姆？ ——我弟弟正在玩他的玩具車。7．B【詳解】句意：——什么聲音，山姆？ ——我弟弟正在玩他的玩具車?？疾閯?dòng)詞時(shí)態(tài)辨析。解析：C【詳解】句意：請保持安靜。考查動(dòng)詞時(shí)態(tài)辨析。6．C【詳解】句意：請保持安靜?？疾楝F(xiàn)在進(jìn)行時(shí)。根據(jù)“Tony, hurry up! We…for you now.”可知，此處強(qiáng)調(diào)動(dòng)作正在發(fā)生，用現(xiàn)在進(jìn)行時(shí)，故選解析：D【詳解】句意：——托尼，快點(diǎn)！我們現(xiàn)在在等你?！@就來。故填B。考查動(dòng)詞時(shí)態(tài)。根據(jù)前句“The noise es from the boys.”語境可推知，后句中動(dòng)作正在進(jìn)行，應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式解析：B【詳解】句意：噪音來自那群男孩。他們正在開派對。句中“Listen”是現(xiàn)在進(jìn)行時(shí)態(tài)的標(biāo)志詞，其結(jié)構(gòu)為am/is/are+動(dòng)詞現(xiàn)在分詞，主語“The birds”是復(fù)數(shù)，be動(dòng)詞用are，故選C。句中“Listen”是現(xiàn)在進(jìn)行時(shí)態(tài)的標(biāo)志詞，其結(jié)構(gòu)為am/is/are+動(dòng)詞現(xiàn)在分詞，主語“The birds”是復(fù)數(shù)，be動(dòng)詞解析：C【詳解】句意：聽!鳥兒在窗外的樹上快樂地歌唱。3．C【詳解】句意：聽!鳥兒在窗外的樹上快樂地歌唱。根據(jù)語境可知，英語演講比賽下周舉行，杰克現(xiàn)在應(yīng)該是正在準(zhǔn)備，因此用現(xiàn)在進(jìn)行時(shí)；其結(jié)構(gòu)是：be（am/is /are）+動(dòng)詞的現(xiàn)在分詞?？疾閯?dòng)詞時(shí)態(tài)。根據(jù)語解析：B【詳解】句意：——我有幾天沒見到杰克了。考查動(dòng)詞時(shí)態(tài)。2．B【詳解】句意：——我有幾天沒見到杰克了。prepare準(zhǔn)備；is preparing現(xiàn)在進(jìn)行時(shí)；will prepare一般將來時(shí)；was preparing過去進(jìn)行時(shí)；has prepared現(xiàn)在完成時(shí)；根據(jù)時(shí)間狀語“now”可知，句子時(shí)態(tài)采用現(xiàn)在進(jìn)行時(shí)。prepare準(zhǔn)備；is preparing現(xiàn)在進(jìn)行時(shí)；will prepare一般將來時(shí)；was prepa解析：A【詳解】句意：你最好現(xiàn)在不要打擾凱西，因?yàn)樗跒槊魈斓臅?huì)議準(zhǔn)備演講。s not at home. She___________in the library.A．read B．reads C．is reading D．was reading20．Now ABC Cinema on Forest Road ________ the old film called Roman Holiday.A．is show B．is showing C．is showed D．is on21．—Tom, where is your father?—He ________ my bike.A．is repairing B．repairs C．has repaired D．will repair22．— Mom, I’m busy making the bed. Can you give me a hand? — Wait a moment. I ________ the floor.A．a(chǎn)m cleaning B．will clean C．was cleaning D．have cleaned23．— Helen, how was your English petition on Monday?— I have no idea, I _________ for the result. I was told it would e out in two days.A．was waiting B．waited C．will wait D．a(chǎn)m waiting24．—How do you find your pany?—A little worried. We ________ ground as a leader in the field of IT with the others speeding up development.A．a(chǎn)re losing B．were losing C．lost D．have lost25．— May I speak to Mr. Brown?— I am sorry. He ________ an important meeting in his office now.A．has B．had C．is having D．will have26．— Dad, I can’t work out this math problem. Can you give me a hand?— Wait a moment. I ________ on the phone.A．a(chǎn)m talking B．will talk C．was talking D．have talked27．— Where is Tom?— Look! He ________with the teacher over there.A．talk B．talks C．talked D．is talking28．—Jane,where are you?—Dad,I________ the car in the driveway. It is really dirty.A．wash B．will wash C．a(chǎn)m washing D．was washing29．Betty can’t join us in the game. She ________ the classroom.A．has cleaned B．was cleaning C．has cleaned D．is cleaning30．Mum ________ fish in the kitchen. It smells so good.A．cooks B．is cooking C．was cooking D．will cook31．The students in our group ________ the final preparation for the match. We are sure to win.A．made B．a(chǎn)re making C．make D．wi