■ everyday 与 every day

前者是形容词。

• an everyday occurrence每天常见的事情，家常便饭。

后者是状语词组。

• It happens every day.这是天天都发生的。

• injure 与 wound
• in luck
• in luck 与 lucky
• in one's own right
• in question
• inside
• insist
• inspire
• instead
• instead of
• instead 与 stead
• institute
• institution
• instruct
• intent
• intention
• intention
• intent 与 intention
• interest
• interested
• in terms of
• internalize
• in the air
• in the air 与 on the air...
• in the first place