21.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。

22.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。

23.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.

24.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。

25.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。

26.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。

27.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。

29.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'sstill dependent on state benefit. The rate of relief is dependent on one's income.

30.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.

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