easy
1.easy是“容易的”，不是“感觉容易的”，如可以说This is an easy lesson和This lesson is easy to learn。不可说I am easy to learn the lesson或I am easy in learning the lesson。
2.可以说This lesson is easy to learn。也有人说This lesson is easy to be learnt，但很少见，不算正当。同样地，通常说easy to do, easy to solve, easy to understand等，不说easy to be done, easy to be solved, easy to be understood等。
This lesson is easy to be learnt不算正当，但This lesson is easily to be learnt和This lesson is easily learnt都是正常的英语（两句意思相同），不过不及This lesson is easy to learn普通。但This lesson is easily (to be) forgotten却不可改作This lesson is easy to forget。This word is easily (to be) misused也不可改作This word is easy to misuse。注意“忘记”和“误用”都是要不得的。
It is easy to forget this lesson和It is easy to misuse this word却又是正常的英语。
3.easy后面有时接of和表示动作的名词，如easy of access（易于接近），easy of acceptance（易于接受）和easy of accomplishment（易于成功）。
4.take it easy, take things easy和take matters easy三种表达方式都作“从容”或“不紧张”解，习惯用easy，极少用easily。但下面两句里用easily而不用easy，显然因为前面有more或too。例如：
You can't afford to take things more easily.
You seem to take matters too easily.