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不行,我在幫我弟弟大衛(wèi)學數(shù)學。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 helped3.The zoo keeper is worried because the number of visitors ________ smaller and smaller.A.bee B.a(chǎn)re being C.is being D.have bee4.—Hello! May I speak to Tom?—One moment! He _______ an .A.is sending B.sent C.sends D.was sending5.Betty can’t join us in the game. She ________ the classroom.A.has cleaned B.was cleaning C.has cleaned D.is cleaning6.—Where is your father, Lily?—He ________ in the kitchen.A.cooked B.cooks C.will cook D.is cooking7.I must leave now. My brother ________ for me outside.A.waits B.waited C.is waiting D.was waiting8.—Where is John?—He is in the kitchen. He ________ the dishes now.A.will wash B.is washing C.washes D.washed9.Betty can’t join us in the card game. She ________ the classroom.A.has cleaned B.was cleaning C.has cleaned D.is cleaning10.— What’s that noise, Sam?— My little brother ________ his toy car.A.played B.is playing C.plays D.was playing11.— Shh, don’t make noise! Mrs. Smith ________ the latest news in the studio.— I’m sorry about that.A.presents B.presented C.has presented D.is presenting12.—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 repaired13.Excuse me. I really need to go now. My children _____________for me at school.A.a(chǎn)re waiting B.waits C.wait D.waited14.Ladies and gentlemen, please remain in your seats, fasten your seat belt and bring your seat back. The plane________.A.takes off B.is taking off C.has taken off D.took off15.—I can39??疾闀r態(tài)。根據(jù)前面的“One moment!”可知,判斷設空處的動作“發(fā)送電子郵件”在說話時刻正在進行著,所以用解析:A【詳解】句意:——你好!我可以和湯姆講話嗎?——等一下,他正在發(fā)電子郵件。7.C【詳解】句意:我現(xiàn)在必須離開了,我哥哥正在外面等我。她正在打掃教室。presents動詞第三人稱單數(shù)形式;presented表一般過去時;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最新消息。我的孩子們在學校等我。他在哪里?——哦,他在圖書館學習??疾楝F(xiàn)在進行時?!D懵猛居淇?。根據(jù)“Be quiet.”及語境可知,此處表達的動作是正在進行的,應用現(xiàn)在進行時,故選B。我到處找不到戴維。25.B【詳解】句意:我父親下周要動身去北京。根據(jù)“Xifeng Street is closed today”可知,今天工人正在維修,因此應該使用現(xiàn)在進行時。我稍后給你。我正在用它工作??疾楝F(xiàn)在進行時。根據(jù)時間狀語at the moment,可知句子時態(tài)用現(xiàn)在進行時,其結(jié)構(gòu)為be+動詞的現(xiàn)在分詞,主語Many children是復數(shù),be動詞用are,face的現(xiàn)在分詞是facing;故選D。結(jié)合選項,故選D??疾閯釉~時態(tài)。我可以晚點再跟你談嗎?——沒問題。根據(jù)“It’s 4 o’clock in the afternoon.”可知,此處強調(diào)在某一時刻正在發(fā)生的動作,用現(xiàn)解析:B【詳解】句意:現(xiàn)在是下午4點?!玫模瑡寢?。故選C。我正在廚房煮咖啡??疾闀r態(tài)。解析:C【詳解】句意:——當心!有東西從樹上掉下來?!埖纫幌?,父親正在房間里打電話??疾閯釉~時態(tài)。你能幫我一下嗎?——等一下。——這就來。上句提到還沒有上車,所以此句是說正在等待琳達,應用現(xiàn)在進行時,其構(gòu)成為“am/is/are doing”,主語“I”為第一人稱,應用am構(gòu)成現(xiàn)在進行時,故選B。考查時態(tài)。考查時態(tài)?!獙Σ黄?。 考查現(xiàn)在進行時。他正在洗碗。故選D。根據(jù)前句“The zoo keeper is worried”的語境可知,后句動作應是解析:C【詳解】句意:動物園管理員很擔心,因為游客數(shù)量越來越少。你在忙什么?——我正在做一個關(guān)于家族史的項目。根據(jù)“What are you up to”可知,答語要用現(xiàn)在進行時,表示現(xiàn)在正在進行的動作,結(jié)構(gòu)為a解析:C【詳解】句意:——嗨,大明??疾閯釉~時態(tài)和the number of的用法。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,故句子應用現(xiàn)在進行時,其構(gòu)成是am/is/are doing。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。根據(jù)“Wha