摘要: section B 3a *unhappy 是happy的反义词.类似这样的在词首加词变为其反义词的情况在英语中很常见. happy- unhappy lucky- unlucky fair-unfair comfortable- uncomfortable *call the police 报警 是名词.通常用the police表示复数名词.意思是警察.警方.如果表示一名警察.则用a policeman 或a policewoman. *There must be something visiting the homes in our neighborhood. There must be一定有- There must be someone singing in the next room.

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