adv.通常；经常

I usually wake up early. 我通常醒得很早。

Medicines are usually compounds. 药品通常是复合物。

They don't usually imprison first offenders. 他们通常不监禁初次犯罪的人。

A man's voice is usually lower than a woman's. 男子的嗓音通常比女子的低。

Children under five usually travel free on trains. 五岁以下的儿童乘火车通常免费。

The teacher usually worked on till late at night. 这位老师经常一直工作到深夜。

usually是频度副词,意思是“常常”“习惯于”,有遵循常规的意思,其经常性约为90％。

usually只能用作状语,位于实义动词之前,系动词、助动词或情态动词之后,也可放在句首或句末表示强调。用于否定句时,多位于实义动词与系动词、助动词或情态动词的中间

usually也可位于否定句之前,表示某事通常不会发生。

unusually同usually的用法不一样,unusually只用来修饰形容词或另一个副词,不能用来修饰动词。例如:He's unusually fond of chocolate.他非常喜欢巧克力。I see,you had done your homework unusually well.原来,你作业做得非常出色。