15．-The boys are not doing a good job at all，are they？
-_________．（　�。�
A．I guess not soB．I don't guess
C．I don't guess soD．I guess not

分析 --這個男孩做的一點也不好，不是嗎？
--我認為他們沒做好．

解答 D．考查交際用語．I guess not相當(dāng)于I guess they aren't doing a good job at all．  這里是一種習(xí)慣用法．通常，只有think才用于I don't think so．中． 所以答案選D．

點評 英語口語交際并不是一個簡單的過程，它需要交際者本身具有多方面的能力和知識水平及其它內(nèi)在因素，社會關(guān)系至關(guān)重要，所謂語言用得得體與否，不僅指語音、詞匯、語法包括語言本身是否無誤，而且指是否適應(yīng)它的社會環(huán)境．

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