1. easy用作副詞通常只用于某些特定的表達中。如：

Take it [things] easy. 別著急(慢慢來)。

Easy come, easy go. 來得容易去得快。

Easier said than done. 說來容易做來難。

2. easily 的用法則很廣，除表示“容易地”、“輕而易舉地”外， 還可表示“無疑地”、“可能地”，可用于動詞之前或之后。如：

That can be done easily. 這很容易辦到。

Some children learn languages easily. 有些孩子學語言很容易。

Our team was easily beaten. 我們輕而易舉地被打敗。

I can easily finish the work. 我可以毫不費力地完成這工作。

The window shuts easily. 窗子很容易就關上了。

They could easily get to do the typing. 他們可以很容易地找到另一個姑娘來打字。

She is easily the cleverest girl in the class. 她無疑是這個班最聰明的女孩。

A skilled worker can perform the task easily. 熟練工人做這項工作很容易。

I'm on a diet, since I put on weight easily. 由于我很容易長胖，我現在在節食。

Not only did he speak more correctly, but he spoke more easily. 他不僅說得更正確，而且講得更不費勁了。