★imaginable、imaginary与imaginative

　　imaginable:: that can be imagined 可想象的

　　～ difficulties

　　imaginary: existing only in the mind, unreal 想象中的， 不真实的

　　～ figure

　　imaginative: of, having, using imagination 有想象力的， 运用想象力的

　　a ～ writer

　　★intelligent、intelligible与intellectual

　　intelligent: having, showing intelligence, clever 有才智的, 聪明的

　　an ～ looking girl ～ answer

　　intelligible: clear to mind, that can be easily understood. 易了解的, 易领悟的

　　an ～ speech/explanation

　　intellectual: possessing a great deal of knowledge 知识的, 智力的

　　★contemptible与contemptuous

　　contemptible: deserving contempt 可卑的

　　a ～ lie

　　contemptuous: showing contempt 表示轻视的

　　a ～ look

　　★credible、credulous与creditable

　　credible: that can be believed 可信的， 可靠的

　　a ～ witness

　　credulous: too ready to believe things. 轻易相信的， 易上当的

　　He always cheats ～ people.

　　creditable: that brings credit. 可称赞的

　　a ～ record/deed/effort

　　★alternate与alternative

　　alternate: changing by turns 轮流的， 交替的

　　alternative: giving a choice between two things 选择的， 两者选一的

　　★comparable与comparative

　　comparable 可比较的， 有类似之处的

　　There is no scenery comparable to that of the West lake.

　　comparative 比较而言的， 相当的

　　He lived in comparative comfort recently.