everyday,every day,one day,a day的区别和相同点

Question

everyday，every day，one day，a day的区别

Answer 1

everyday，every day，one day，a day

everyday，every day ，意思都是"每天"，但everyday作定语，如Everyday English.
every day 作状语， study English every day.

one day 过去或未来 有一天 如， I met him in a store one day. I will defeat them one day.

a day 泛指 任何一天。 如，An apple a day keeps a doctor away.

Answer 2

*everyday 形容词：每天的, 日常的, 平常的, 平凡的例：a suit for everyday wear.适合平日里穿的衣服*every day 通常做“每天”解作状语时，省掉介词（in),表示频率。I go to school every day.我每天上学He exercises every day. 他每天锻炼
some day 将来的某天，e.g. I'll come back some day.
one day 和a day 在针对“一天”来说几乎相同。
one day 也可指过去的某天,或将来的某天。
e.g. One day,.......(好多故事都这么开篇吧)
He'll come to realize it one day.

Answer 3

everyday 可以做名词或者形容词，表示每天的，日常

every day 是做时间状语，表示每天
one day 也是个时间状语，表示 有一天，总有一天

a day 是一个泛指，表示一天