17.How long do you think         China fulfils its drean of becoming a low carbon  leader in the world?( 。
A.it will be beforeB.will it be until
C.will it be whenD.it will be that

分析 你認(rèn)為多久以后中國(guó)會(huì)實(shí)現(xiàn)成為世界低碳國(guó)家領(lǐng)頭羊的夢(mèng)想?

解答 答案:A 題干中think后接賓語(yǔ)從句,從句要用陳述句語(yǔ)序,排除BC;句意表達(dá)是多久以后才,it will be+時(shí)間段+before從句,不是不久就,多久以后才.故選A.

點(diǎn)評(píng) 從屬連詞是連詞的一種,用來(lái)引導(dǎo)名詞性從句和狀語(yǔ)從句.大致可分為三大類(lèi):that(無(wú)詞義,不做成分)if,whether (表達(dá)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(yǔ)、表語(yǔ)、賓語(yǔ));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(yǔ)).學(xué)習(xí)時(shí),要注意區(qū)分和掌握.

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