20．Will you be kind enough to hold the door open for me as Iam carrying（carry） too many things to spare
a hand？

分析 你能友好的幫我把門開著嗎，因?yàn)槲野崃颂嗟臇|西騰不出一只手．

解答 答案：am carrying．結(jié)合句意是說我搬了太多的東西騰不出一只手．表示動(dòng)作的正在進(jìn)行，故用現(xiàn)在進(jìn)行時(shí)am/is/are+doing，主語I，故am，動(dòng)詞carry的現(xiàn)在分詞是carrying，故答案是am carrying．

點(diǎn)評(píng) 現(xiàn)在進(jìn)行時(shí)表示正在進(jìn)行的動(dòng)作或存在的狀態(tài)．現(xiàn)在進(jìn)行時(shí)的構(gòu)成是：主語+be動(dòng)詞（am/is/are）+動(dòng)詞ing形式〔現(xiàn)在分詞〕肯定句：主語+be動(dòng)詞（am/is/are）+動(dòng)詞ing+其他．否定句：主語+be動(dòng)詞（am/is/are）+not+動(dòng)詞ing+其他．

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