bad，四年级造句简单

1. Why are these products so bad

为何这些产品如此糟糕。

2. Best is the superlative form of good and worst is the superlative form of bad.

“best”是“good”的最高级形式，“worst”是“bad”的最高级形式。

3. Emitting noise when something bad happens is called negative audible feedback.

有问题时发出噪声称为“负面听觉反馈”。