The weak intonation is shown in the following features: low fundamental frequency, narrow pitch range, and the rising of boundary tone.

祈使句语气的弱化通常体现在以下几个方面：降低基频、缩小基频范围、以及抬高边界调。

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The weak intonation is shown in the following features: low fundamental frequency, narrow pitch range, and the rising of boundary tone.

祈使句语气的弱化通常体现在以下几个方面：降低基频、缩小基频范围、以及抬高边界调。

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