如果我想表示疑问我该用什么语调？
孩子停止提题目而开始对答案表示疑问的那个阶段。
The period when children stop asking questions and begin to question the answers.
正反疑问句是并列谓语的肯定形式与否定形式来表示疑问。
The affirmative-negative questions are formed by juxtaposing the affirmative and negative forms of the main element of the predicate.
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