2．The reason for your mistakes is because you lack confidence in yourself．because改為that．

分析 你犯錯誤的原因是你缺乏對自己的自信．

解答 答案：because改為that 考查句子改錯．reason后接句意完整的表語從句時引導(dǎo)詞用that，不用because．

點評 單句改錯涉及詞匯、語法、句型結(jié)構(gòu)等方面的知識和邏輯情理的推斷和綜合辨析能力，是一種在較高層次上考查考生對英語知識的掌握和語言綜合運(yùn)用能力的測試題型．它是專門針對考生們平時學(xué)習(xí)英語過程中，尤其是寫作練習(xí)中常犯的又是較為普遍的錯誤而設(shè)計的．

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