【正文】 ake noise”可知，不讓出聲是因?yàn)槭访芩固诓?bào)最新消息，應(yīng)用現(xiàn)在進(jìn)行時(shí)，故選D?？疾楝F(xiàn)在進(jìn)行時(shí)。presents動(dòng)詞第三人稱單數(shù)形式；presented表一般過(guò)去時(shí)；has pre解析：D【詳解】句意：——噓，別出聲！史密斯太太正在演播室里播報(bào)最新消息。 ——對(duì)此我很抱歉。故選C。根據(jù)語(yǔ)境及“at the moment”可知，打來(lái)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(yǔ)境及“at the moment”可知，打來(lái)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。10．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)句意“…before there is none left”可知，油還沒(méi)有用完，快要用完了，這里用現(xiàn)在進(jìn)行時(shí)表示“將要，快要”。考查動(dòng)詞時(shí)態(tài)。根據(jù)句意“…before there is none l解析：B【詳解】句意：我的油快要用完了?？疾閯?dòng)詞時(shí)態(tài)。9．B【詳解】句意：我的油快要用完了?？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(lái)。故選A?？疾闀r(shí)態(tài)?？疾闀r(shí)態(tài)。故選D。plays動(dòng)詞第三人稱單數(shù)形式；played表一般過(guò)去時(shí)；will play表一般將來(lái)時(shí)；is playing表現(xiàn)在進(jìn)行時(shí)。根據(jù)句中“解析：D【詳解】句意：聽！這個(gè)男孩又在彈鋼琴了?？疾楝F(xiàn)在進(jìn)行時(shí)。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(yǔ)“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(yǔ)“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(lè)地歌唱。5．C【詳解】句意：聽!鳥兒在窗外的樹上快樂(lè)地歌唱。根據(jù)前句“The zoo keeper is worried”的語(yǔ)境可知，后句動(dòng)作應(yīng)是正在進(jìn)行，故時(shí)態(tài)應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式為：be doing，故排除A、D項(xiàng)；the number of，表示“……的數(shù)量”，作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞用單數(shù)形式，故排除B項(xiàng)。根據(jù)前句“The zoo keeper is worried”的語(yǔ)境可知，后句動(dòng)作應(yīng)是解析：C【詳解】句意：動(dòng)物園管理員很擔(dān)心，因?yàn)橛慰蛿?shù)量越來(lái)越少。4．C【詳解】句意：動(dòng)物園管理員很擔(dān)心，因?yàn)橛慰蛿?shù)量越來(lái)越少。根據(jù)“Where is your father, David?”可知，此處是詢問(wèn)當(dāng)前的情況，強(qiáng)調(diào)動(dòng)作正在進(jìn)行，用現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)為：am/is/are + 動(dòng)詞現(xiàn)在分詞，主語(yǔ)為he，be動(dòng)詞用is。根據(jù)“Where is your father, David?”可知，此處是詢問(wèn)當(dāng)前的情況，強(qiáng)調(diào)動(dòng)作正在進(jìn)解析：C【詳解】句意：——大衛(wèi)，你爸爸在哪里？ ——他正在花園里洗車。3．C【詳解】句意：——大衛(wèi)，你爸爸在哪里？ ——他正在花園里洗車。主語(yǔ)是she，be動(dòng)詞用is。根據(jù)上文“Hello. May I speak to Laura, please?”及下文“Sorry, she39。考查動(dòng)詞時(shí)態(tài)。我可以和勞拉講話嗎？——對(duì)不起，她不在家?？疾閯?dòng)詞時(shí)態(tài)。我可以和勞拉講話嗎？——對(duì)不起，她不在家。故選C?？疾閯?dòng)詞時(shí)態(tài)。故解析：C【詳解】句意：——Candy，你能幫我洗碗嗎？——對(duì)不起，媽媽。考查動(dòng)詞時(shí)態(tài)。s go to the cinema. There’s a new movie called Avengers IV. —Not now, I _____________ my brother David with his math.A．help B．helped C．a(chǎn)m helping D．have helped18．—Where is Frank?—He _________ to music in his room.A．listens B．is listening C．listened D．was listening19．It dark. Shall I turn on the light？A．gets B．got C．is getting D．was getting20．— What’s that noise, Sam?— My little brother ________ his toy car.A．played B．is playing C．plays D．was playing21．—Look out! Something ________ down from the tree.—Dear me! It’s too dangerous.A．falls B．fell C．is falling D．was falling22．Joe, answer the phone for me. I ________ how to make dumplings in the kitchen.A．learned B．a(chǎn)m learning C．have learned D．learn23．You’d better not go this way. The workers _________ the road. A．have repaired B．a(chǎn)re repairing C．repaired D．will repair24．— 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 cleaned25．— 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 waiting26．— Hi, Tom. I can’t find David anywhere. Do you know where he is?—Oh, he ________ for tomorrow’s exam at home.A．prepares B．is preparing C．has prepared D．prepared27．—What is your mother doin