【正文】 s動(dòng)詞第三人稱單數(shù)形式；played表一般過去時(shí)；will play表一般將來時(shí)；is playing表現(xiàn)在進(jìn)行時(shí)。根據(jù)“Don’t make any noise”及“now”可知，此處應(yīng)用現(xiàn)在進(jìn)行時(shí)表示正在進(jìn)行的動(dòng)作，結(jié)構(gòu)為am/is/a解析：C【詳解】句意：吉姆，別出聲！你的小妹妹現(xiàn)在正在睡覺。隨著其他公司加快發(fā)展，我們?cè)谛畔⒓夹g(shù)領(lǐng)域的領(lǐng)導(dǎo)地位正在逐漸喪失。根據(jù)“now”可知，時(shí)態(tài)為現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)為：am/is are doing，主語為She，be動(dòng)詞用is?？疾閯?dòng)詞時(shí)態(tài)?？疾闀r(shí)態(tài)辨析?？疾閯?dòng)詞時(shí)態(tài)。所以選B。根據(jù)句中“Now”及句意可知，句中動(dòng)作表示正在進(jìn)行，表達(dá)“正在播放”應(yīng)該用現(xiàn)在進(jìn)行時(shí)，其構(gòu)成是am/is/are doing。解析：B【詳解】句意：——弗蘭克在哪兒？——他正在房間里聽音樂?？疾闀r(shí)態(tài)。故選B?！纫粫?huì)，我正在讀我的郵件。故選D。解析：D【詳解】句意：聽！有人正在旁邊的房間里唱歌。14．B【詳解】句意：——那個(gè)糟糕的噪音是什么？——學(xué)生們正在準(zhǔn)備聚會(huì)。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)。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”解析：D【詳解】句意：——邁克，那是什么聲音？——我的弟弟現(xiàn)在正在玩他的玩具汽車。考查時(shí)態(tài)。9．C【詳解】句意：聽!鳥兒在窗外的樹上快樂地歌唱。——對(duì)不起。7．C【詳解】句意：——嗨，大明?？疾楝F(xiàn)在進(jìn)行時(shí)。will wash動(dòng)詞的一般將來時(shí)形式；is washing動(dòng)詞的現(xiàn)在進(jìn)行時(shí)形式；washes動(dòng)詞的三單形式；washed動(dòng)詞的過去式。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)成形式為be doing；主語“They”是復(fù)數(shù)形式，be用are；have的現(xiàn)在分詞是having。根據(jù)題干中“Shall I turn on the light?”可知是說話時(shí)天正在變黑，用現(xiàn)在進(jìn)行時(shí)表示動(dòng)態(tài)的變化。根據(jù)語境可知，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。外研版精品現(xiàn)在進(jìn)行時(shí)基礎(chǔ)練習(xí)題一、選擇題1．—Candy, could you please help me do the dishes?—Sorry, Mom. I ________ my homework.A．do B．did C．a(chǎn)m doing D．have done2．It dark. Shall I turn on the light？A．gets B．got C．is getting D．was getting3．The noise es from the boys. They _______ a party.A．have B．a(chǎn)re having C．will have D．have had4．—Where is John?—He is in the kitchen. He ________ the dishes now.A．will wash B．is washing C．washes D．washed5．—Tony, hurry up! We ________ for you now.—Just one minute.A．wait B．waited C．have waited D．a(chǎn)re waiting6．— What’s that noise, Sam?— My little brother ________ his toy car.A．played B．is playing C．plays D．was playing7．—Hi, Daming. What are you up to?—I ________ a project about family history.A．do B．did C．a(chǎn)m doing D．was doing8．—Tom, please give me a hand in moving the piano. —Sorry. I ________ my car.A．repair B．repaired C．a(chǎn)m repairing D．have repaired9．Listen! The birds ________ happily in the tree outside the window.A．sing B．sang C．a(chǎn)re singing D．were singing10．—Peter, please be quiet. Your brother ________ on the phone.—No problem.A．records B．recorded C．was recording D．is recording11．—What’s that noise, Mike?—My little sister ________ with her toy car now.A．plays B．played C．will play D．is playing12．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 prepared13．—May I use your puter? —Sorry, I ________ on it.A．work B．worked C．have worked D．a(chǎn)m working14．—What’s the terrible noise?—The students ________ for a party.A．have prepared B．a(chǎn)re preparing C．prepare D．will prepare15．Listen! Someone __________ in the next room.A．sings B．sang C．was singing D．is singing16．—Yesterday I received a letter from .—You did? I hear he________for America