11.I'm not sure __________ it's a good idea.( 。
A.whatB.howC.whyD.if

分析 我不確定是否它是一個(gè)好主意.

解答 答案:D.考查連詞.句意"我不確定是否它是一個(gè)好主意.".A什么.B怎么.C為什么.D是否、如果.結(jié)合語(yǔ)境"我不確定",可知是由if引導(dǎo)的賓語(yǔ)從句.意思是"是否",答案是D.其它不符合.

點(diǎn)評(píng) 連詞可以表并列、承接、轉(zhuǎn)折、因果、選擇、假設(shè)、比較、讓步等關(guān)系,要結(jié)合語(yǔ)境,選擇合適連詞用法.

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