1．名词短语也可以作时间状语,但不能放在句首,如He runs day and night.只能说有些表示时间的介词短语如on Sunday ,yesterday ,tomorrow等为了强调,才放在句首.一般情况下,方式状语+地点状语+时间状语如：“He worked well here yesterday.”但表示时间频率和程度的副词（always,usually never 等）作状语时,通常放在动词的前面如He often worked here.
2．every　day　应该分开两个单词写,才做时间状语.修饰全句.