【正文】 prepares一般現(xiàn)在時(主語是三單形式) ；is preparing現(xiàn)在進行時；has prepared現(xiàn)在完成時；prepared一般過去時。考查時態(tài)。根據(jù)上句“Betty can’t join us in the game”，此處指的是現(xiàn)在發(fā)生的事，故應(yīng)用現(xiàn)在時，且根據(jù)語境可知，貝蒂不能來的原因是她正在打掃教室，故句子應(yīng)用現(xiàn)在進行時，其構(gòu)成是am/is/are doing。根據(jù)問句“What’s that noise, Mike?”可知，提到的聲響是現(xiàn)有的，結(jié)合答句中“now”可知，是說現(xiàn)在正在進行的動作，用現(xiàn)在進行時。考查動詞時態(tài)?！玫?，媽媽。33．B【詳解】句意：——魯比，你能幫我洗碗嗎？ ——等一下，媽媽。32．D【詳解】句意：對不起，托尼你不能拿走橡皮?？疾閯釉~時態(tài)。考查時態(tài)辨析。will wash動詞的一般將來時形式；is washing動詞的現(xiàn)在進行時形式；washes動詞的三單形式；was解析：B【詳解】句意：——約翰在哪里？——他在廚房里。故選C。根據(jù)“Xifeng Street is closed today”可知，今天工人正在維修，因此應(yīng)該使用現(xiàn)在進行時?？疾閯釉~時態(tài)辨析。根據(jù)題干“he…for tomorrow’s exam at home解析：B【詳解】句意：——嗨，湯姆。我正在掃地。根據(jù)“You’d better not go this way”可知，工人們正在修路，所以建議不要走這邊，此處使用現(xiàn)在進行時，結(jié)構(gòu)為be doing。根據(jù)“We are sure to win.”可知正在做最后的準(zhǔn)備，用現(xiàn)在進行時，其結(jié)構(gòu)為am/is/are doing。face動詞原形；faces第三人稱單數(shù)；is facing現(xiàn)在進行時，主語為單數(shù)形式；are facing現(xiàn)在進行時，主語為復(fù)數(shù)形式。prepare準(zhǔn)備；is preparing現(xiàn)在進行時；will prepare一般將來時；was prepa解析：A【詳解】句意：你最好現(xiàn)在不要打擾凱西，因為她正在為明天的會議準(zhǔn)備演講?？疾閯釉~時態(tài)。選項A為一般現(xiàn)在時；選項B為一般過去時；選項C為現(xiàn)在進行時；選項解析：C【詳解】句意：——瑪麗，我們?nèi)タ措娪鞍??？疾閯釉~時態(tài)。故選D。根據(jù)next year可知是一般將來時態(tài)。上句提到還沒有上車，所以此句是說正在等待琳達，應(yīng)用現(xiàn)在進行時，其構(gòu)成為“am/is/are doing”，主解析：B【詳解】句意：——該上學(xué)了。考查時態(tài)。他在哪里？——哦，他在圖書館學(xué)習(xí)。12．B【詳解】句意：女士們，先生們，請留在座位上，系好安全帶，請將座椅靠背調(diào)整好。根據(jù)“now”可知要用現(xiàn)在進行時，其結(jié)構(gòu)為be doing。10．D【詳解】句意：——我可以用你的電腦嗎？——對不起，我正在用它工作。根據(jù)語境可知，此時不能幫媽媽洗碗，是因為正在做作業(yè)，應(yīng)用現(xiàn)在進行時，構(gòu)成形式為：be doing。故選B。根據(jù)語境及“at the moment”可知，打來電話的時候，布朗先生正在開會，時態(tài)用現(xiàn)在進行時，結(jié)構(gòu)為am/is/are doing?！獙Σ黄稹？疾閯釉~時態(tài)?！@就來?？疾閯釉~時態(tài)。wear穿；根據(jù)“I’ll have it changed immediately”可知在說話的時候“毛衣穿反”這個動作正在進行，用現(xiàn)在進行時，結(jié)構(gòu)是：am/is/are + doing；主語是“You”，be動詞用are。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 helped19．—Hey! You nearly hit the tree! What’s up?— Sorry, I ________ the trip to my hometown.A．think about B．a(chǎn)m thinking about C．was thinking about D．thought about20．You’d better not disturb Kathy now as she ________ her speech for tomorrow’s meeting.A．is preparing B．will prepare C．was preparing D．has prepared21．Many children in South Sudan ________ the trouble of hunger at the moment.A．face B．faces C．is facing D．a(chǎn)re facing22．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．will make23．You had 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．— 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．prepared26．I can’t hear you. I ______ to an English speech.A．a(chǎn)m listening B．listen C．was listening27．Xifeng Street is closed today because workers _______ some repairs.A．make B．made C．a(chǎn)re making D．were making28．—Where’s Nick?—He ________ classes at school.A．had B．will have C．is having D．was having29．—Where is John?—He is in the kitchen. He ________ the dishes now.A．will wash B．i