如何使用 "usually" 造句

1. But these are usually very expensive .
但这些通常是非常昂贵。
2. The results are usually qualitative rather than quantitative .
结果常常注重质量的而不是数量。
3. The biggest joys in life are usually free .
生命中最大的欢乐往往是免费的。
4. As opposed to black white usually has a positive connotation .
与黑色不同,白色常有肯定的含义。
5. D : what lind of cases usually provokes your attacks ?
医生:平常在什么情况容易引起您的病发作?