【正文】 文“Just a moment, Mom”可知，此處指的是魯比正在做其他的事情，故句子應(yīng)用現(xiàn)解析：B【詳解】句意：——魯比，你能幫我洗碗嗎？ ——等一下，媽媽。prepares一般現(xiàn)在時(主語是三單形式) ；is preparing現(xiàn)在進(jìn)行時；has prepare解析：B【詳解】句意：——我找不到大衛(wèi)，他在哪兒？——他在家準(zhǔn)備明天的比賽。根據(jù)“Where’s Nick?”可知要回答現(xiàn)在在做什么，用現(xiàn)在進(jìn)行時，其結(jié)構(gòu)為am/is/are doing。你介意晚一點(diǎn)去嗎？考查現(xiàn)在進(jìn)行時。一起來看吧。根據(jù)“Sorry. I...on it”可知此處表示“在說話的時候正在用ipad”，用現(xiàn)在進(jìn)行時be doing。根據(jù)“Look out!”可知，此處提示說話時某事正在發(fā)生，應(yīng)用現(xiàn)在進(jìn)行時。30．C【詳解】句意：——當(dāng)心！有東西從樹上掉下來。根據(jù)“where is your father now”可知是問父親現(xiàn)在正在哪里，由此可知，此句時態(tài)用現(xiàn)在進(jìn)行時態(tài)。根據(jù)“now”可知，時態(tài)為現(xiàn)在進(jìn)行時，結(jié)構(gòu)為：am/is are doing，主語為She，be動詞用is?？疾閯釉~時態(tài)。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，故選B。故選B。故選B。我正在廚房學(xué)習(xí)如何包餃子。22．C【詳解】句意：——你姑姑寫完小說了嗎?？——現(xiàn)在還沒有?！獙Σ黄穑?。故選B。根據(jù)上文“解析：B【詳解】句意：——你看起來心不在焉。flies是fly的第三人稱單數(shù)形式；fly是動詞原形；flew是fly的過去式?！Ｄ懵猛居淇臁eading 動名詞；am reading動詞的現(xiàn)在進(jìn)行時；was reading過去進(jìn)行時；have read動詞解析：B【詳解】句意：——趕緊?！娴模?我聽說他明年要去美國。根據(jù)語境可知，此處指的應(yīng)該是正在準(zhǔn)備做某事，表示正在進(jìn)行的動作要用現(xiàn)在進(jìn)行時，結(jié)構(gòu)是“am/ is/ are doing”，主語students是復(fù)數(shù)，be動詞用are，故選B。他在哪里？——哦，他在圖書館學(xué)習(xí)。takes off動詞三單；is taking off現(xiàn)在進(jìn)行時；has taken of解析：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。我真得要走了?？疾楝F(xiàn)在進(jìn)行時的用法?？疾閯釉~時態(tài)。根據(jù)“Look”可知現(xiàn)在正在跳舞，用現(xiàn)在進(jìn)行時，其結(jié)構(gòu)為be doing?？疾閯釉~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(jìn)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?？疾楝F(xiàn)在進(jìn)行時的用法?？疾楝F(xiàn)在進(jìn)行時。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)解析：D【詳解】句意：貝蒂不能參加我們的比賽。read讀書，原形；reads讀書，第三人稱單數(shù)； is reading 正在讀書，現(xiàn)在進(jìn)行時；was reading正在讀書，過去進(jìn)行時。2．C【詳解】句意：——你好。你哥哥正在手機(jī)上錄音。北師大版八年級現(xiàn)在進(jìn)行時練習(xí)題一、選擇題1．—Peter, please be quiet. Your brother ________ on the phone.—No problem.A．records B．recorded C．was recording D．is recording2．— Hello. May I speak to Laura, please?—Sorry, she39。 expect20．— What’s that noise, Sam?— My little brother ________ his toy car.A．played B．is playing C．plays D．was playing21．—Tina, let’s go out for shopping.—Sorry, Amy. I __________ my homework.A．do B．a(chǎn)m doing C．did22．—Has your aunt finished writing her novel?—Not yet. She ________ it these days.A．wrote B．writes C．is writing D．will write23．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．learn24．You had better not go this way. The workers _________ the road.A．have repaired B．a(chǎn)re repairing C．repaired D．will repair25．You’d better not go this way. The workers _________ the road. A．have repaired B．a(chǎn)re repairing C．repaired D．will repair26．— 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 cleaned27．—What is your mother doing, Linda? —She ________ dinner in the kitchen now.A．is cooking B．was cooking C．cooks D．cooking28．—Lily, where is our father now? Go and get him for lunch. —Just a moment, please. Father ________ a phone call in his room.A．is making B．was making C．makes D．has made29．—What’s that noise, Mike?—My little sister ________ with her toy car now.A．plays B．played C．will play D．is playing30．—Look out! Something ________ down from the tr