15.Three men in police uniformare running(run)out of the building at the moment.

分析 現(xiàn)在有三個(gè)穿警察制服的人正從大樓里面跑出來(lái).

解答 答案:are running
根據(jù)句中的時(shí)間狀語(yǔ)at the monment(此刻;現(xiàn)在)判斷設(shè)空處的動(dòng)作正在進(jìn)行著,所以用現(xiàn)在進(jìn)行時(shí),現(xiàn)在進(jìn)行時(shí)的構(gòu)成是:主語(yǔ)+am/is/are+動(dòng)詞的現(xiàn)在分詞;主語(yǔ)是復(fù)數(shù)名詞,be動(dòng)詞用are,run的現(xiàn)在分詞是running.故答案為:are running

點(diǎn)評(píng) 本題考查了動(dòng)詞的時(shí)態(tài).做題時(shí),一定要特別關(guān)注有關(guān)的時(shí)間短語(yǔ),這是判斷句子時(shí)態(tài)的標(biāo)志.在沒(méi)有時(shí)間狀語(yǔ)的情況下可以聯(lián)系上下文根據(jù)語(yǔ)境來(lái)做出正確判斷.

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