为了帮助说明你听到和制作的群组范围，当听到你新的音乐片段时请仔细看这些音高(在编辑视窗，数字或字母)。

To help account for the grouping boundaries you hear and make, look carefully (in the Edit Window, by number or by letter) at the given pitches while listening to your new block.

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在整个习题4.2(作业1和2)中，重点在于注意到和试着去说明特征和关系，这正是产生你听到和制作的群组的范围。

Throughout Project 4.2 (Tasks 1 and 2), the main point is to pay attention to and try to account for the kinds of features and relations that generate the grouping boundaries you hear and make.

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然后把这些音符附上音高，带出这些群组，制作出顺畅的旋律。

Then give pitches to the durations so as to bring out these groupings and to make a coherent melody.

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