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 sbs 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”Hes 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。
8.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”;Hesstill dependent on state benefit. The rate of relief is dependent on ones 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
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