16．學(xué)生們正忙著幫老人們打掃房間．
The studentsare busy helping the old people clean the house．

分析 are busy helping the old people clean

解答 答案：are busy helping the old people clean．
首先通過(guò)中英文句子的比對(duì)，可知英文句子中缺少"正忙著幫老人們打掃"的表達(dá)．句式"忙于做某事"是be busy doing sth．短語(yǔ)"幫助某人做某事"的英文表達(dá)是：help sb．do sth..本題中，句子表述的是現(xiàn)在的情況，所以be動(dòng)詞用are，故答案為：are busy helping the old people clean

點(diǎn)評(píng) 做這類題型，首先根據(jù)所給漢語(yǔ)明確句子所要考查的單詞或短語(yǔ)的拼寫，再結(jié)合相關(guān)語(yǔ)法知識(shí)對(duì)單詞或短語(yǔ)做出形式上的變化．

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