1.confident和confidant

　　confident“深信，确信，自信”。

　　confidant“心腹朋友”。She has no close confidant to whom she can turn for advice or help.

　　她没有知心朋友来帮助或是劝告她。

　　2.continual和continuous

　　continual“连续，继续”;“频繁的”;continual bouts of toothache一阵接一阵的牙痛。(这中间可能有停顿或间断。)

　　continuous“连续”(指从不间断的); We have had three weeks of continuous rain.

　　我们这里连续三周下雨不停。

　　3.might和could

　　might表明“possibility”。

　　could应该用来表明“permission”. Mum said we could (might) go to the football match.

　　4.council和counsel

　　council“议事机构”，委员会;a cabinet council内阁会议。

　　counsel“商议，劝告”;follow sb's counsel close牢记某人忠告。

　　5.creditable和credible

　　creditable“声誉好的，可称许(赞扬)的”;credible

　　“可信的，可靠的”He's the only one without a credible alibi (辩解，托辞)，他是惟一一个没有可信托辞的人。

　　6.decisive和decided

　　decisive“果断的，断然的”;decisive measures断然的措施。

　　decided“明确的，无疑的”;a decided success明显的成功。

　　7.defective和deficient

　　defective (having a fault or flaw)“有缺陷的”。

　　deficient (lacking in what is needed)“不足的”;be deficient in欠缺。28.definite和definitive

　　definite (certain or clear, not vague)“明确的，一定的”。

　　definitive (authoritative, that cannot be improved)“限定的，决定性的，最后的”; definitive host宿主;definitive organs定形器官;definitive sentence最后判决。

　　9.dependant和dependent

　　dependant n.(one who depends on another for support)受赡养者。

　　dependent adj.“依靠的，依赖的”;He'sstill dependent on state benefit. The rate of relief is dependent on one's income.

　　10.discreet和discrete

　　discreet“考虑周到的，慎重的”。

　　discrete“分离的，分裂的”;On closer examination, we find that the pattern is formed from thousands of discrete dots of colors.