推荐回答（2个）
usually只是个副词，它不能决定句子的动词，动词和时态、语态有关
比如，I
usually
go
to
school
by
bike.
She
usually
goes
to
school
by
bike.
She
usually
went
to
school
by
bike
last
year.
看句子的主语，
如果句子的主语是动作的执行者，那就是用主动的进行时态。
is
he
going
to
school
today？
主语he是动作go的执行者，所以用主动的进行时态。
如果句子的主语是动作的承受着，那就用被动时态。
is
your
homework
done？
主语homework是动作do的承受者，所以用被动。
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