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12.It is easy to set the goal of our production for next year,but      to achieve it takes a lot of trouble.(  )
A.howB.whoC.whereD.when

分析 為我們明年的產(chǎn)品確立一個目標(biāo)很容易,但如何實現(xiàn)目標(biāo)卻不輕松.

解答 答案:A 句中to achieve it是作句子的主語;how表示方式,who指代人,where表示地點,when表示時間;句意表達的是和set the goal確立目標(biāo),相對應(yīng)的實現(xiàn)目標(biāo),應(yīng)該是實現(xiàn)目標(biāo)的方法.故選A.

點評 從屬連詞是連詞的一種,用來引導(dǎo)名詞性從句和狀語從句.大致可分為三大類:that(無詞義,不做成分)if,whether (表達是否的意義,但不做句子成分); 連接代詞:who,whom,whose,what,which,whatever,whoever,whichever(有詞義,在句子中可作主語、表語、賓語);連接副詞:when,where,why,how,how many,how long,how far,however,whenever,wherever (有詞義,作從句的狀語).學(xué)習(xí)時,要注意區(qū)分和掌握.

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