◎ 题干
The teacher often warns the boy _____ swim _____ in the sea because it's dangerous.
[     ]
A. don't; alone
B. not; by himself
C. not to; by himself
D. not to; lonely
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The teacher often warns the boy_____ swim_____ in the sea because it's dangerous.[ ]A. don't; aloneB. not; by himselfC. not to; by himselfD. not to; l…”主要考查了你对  【反身代词】【不定式】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。