【正文】 ，請(qǐng)留在座位上，系好安全帶，請(qǐng)將座椅靠背調(diào)整好?？疾閯?dòng)詞時(shí)態(tài)。故選C。故選B?？疾楝F(xiàn)在進(jìn)行時(shí)。解析：C【詳解】句意：看，許多人在公園里跳舞。我可以和勞拉講話嗎？——對(duì)不起，她不在家。t e yet. I ___________for her.A．have waited B．a(chǎn)m waiting C．was waiting D．waited17．—Hurry up!—One moment. I ________ my s.A．reading B．a(chǎn)m reading C．was reading D．have read18．—Mary, let39。考查時(shí)態(tài)。s not at home.”可知，這里是現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)是be doing的形式。5．C【詳解】句意：我現(xiàn)在必須離開了，我哥哥正在外面等我。根據(jù)“now”可知要用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為be doing。9．C【詳解】句意：——去看電影怎么樣？有部叫《嗨，媽媽》的新電影?？疾楝F(xiàn)在進(jìn)行時(shí)的用法。根據(jù)答語(yǔ)“Sorry, I… on it.”的語(yǔ)境可推斷出，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 do解析：D【詳解】句意：——我可以用你的電腦嗎？——對(duì)不起，我正在用它工作。根據(jù)“Listen!”可知，本句時(shí)態(tài)是現(xiàn)在進(jìn)行時(shí)，主語(yǔ)“Someone”表單數(shù)，故選D。reading 動(dòng)名詞；am reading動(dòng)詞的現(xiàn)在進(jìn)行時(shí)；was reading過(guò)去進(jìn)行時(shí)；have read動(dòng)詞的現(xiàn)在完成時(shí)。你在等別人嗎？——是的。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。23．B【詳解】句意：?jiǎn)?，替我接電話。根?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(jìn)行時(shí)，結(jié)構(gòu)為be doing。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。考查現(xiàn)在進(jìn)行時(shí)。考查動(dòng)詞的時(shí)態(tài)。33．D【詳解】句意：——Tom，你的姐姐在做什么？——她正在書房里做她的家庭作業(yè)。35．C【詳解】句意：——Jane，你在哪里？——爸爸，我正在車道上洗車。根據(jù)上文“could you help pick up the phone”，結(jié)合麥琪的肯定回答，可知ri解析：D【詳解】句意：——麥琪，你能幫我接電話嗎？它在響?？疾楝F(xiàn)在進(jìn)行時(shí)。40．C【詳解】句意：西峰街今天關(guān)閉，因?yàn)楣と苏谶M(jìn)行一些維修工作?？疾閯?dòng)詞時(shí)態(tài)辨析。考查動(dòng)詞時(shí)態(tài)。do做，是一個(gè)動(dòng)詞。故選C。故選A。根據(jù)“We…ground as a leader in the field of IT with the others speeding up development.”可知，此處強(qiáng)調(diào)動(dòng)作正在進(jìn)行中，用現(xiàn)在進(jìn)行時(shí)，故選A。25．A【詳解】句意：——媽媽，我在忙著鋪床?？疾閯?dòng)詞時(shí)態(tài)。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。我們很久沒(méi)見面了。主語(yǔ)是I，此處用am reading。為什么不上車呢？——琳達(dá)還沒(méi)來(lái)。根據(jù)答語(yǔ)“Sorry, I… on it.”的語(yǔ)境可推斷出，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(yǔ)“I”是第一人稱單數(shù)形式，be用am，work的現(xiàn)在分詞是working?？疾楝F(xiàn)在進(jìn)行時(shí)的用法?？疾閯?dòng)詞時(shí)態(tài)。故選B。根據(jù)“I must leave now.”可知，我哥哥現(xiàn)在正在外面等我，時(shí)態(tài)是現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)：am/is/are+解析：C【詳解】句意：我現(xiàn)在必須離開了，我哥哥正在外面等我。故選C。你哥哥正在手機(jī)上錄音。s not at home. She___________in the library.A．read B．reads C．is reading D．was reading3．Look, many people ________ in the park.A．dance B．danced C．a(chǎn)re dancing D．will dance4．Listen! The birds ________ happily in the tree outside the window.A．sing B．sang C．a(chǎn)re singing D．were singing5．I must leave now. My brother ________ for me outside.A．waits B．waited C．is waiting D．was waiting6．Listen! The boy ________ the piano again.A．plays B．played C．will play D．is playing7．—Hello, may I speak to Jim?—Sorry, he ________ an important meeting now.A．has B．is having C．will have D．was having8．The noise es from the boys. They _______ a party.A．have B．a(chǎn)re having C．will have D．have had9．—What about going to the cinema? There’s a new movie called Hi, Mom.—Not now, I ________ my brother Tony with his English.A．help B．helped C．a(chǎn)m helping D．have helped10．—Hi, Daming. What are you up to?—I ________ a project about family history.A．do B．did C．a(chǎn)m doing D．was doing11．—Can Peter play games with us, Mrs. Hawking?—Wait a minute. He ________ a shower.A．is taking B．taken C．took D．was taking12．—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 done13．—May I use your puter? —Sorry, I ________ on it.