assure, ensure, insure 和guarantee 的区别:
1) assure: “向 …保证;使确信”,意为使别人对某事感到肯定和放心,结构为:assure+人+that 从句为宾语。
e.g. The witness assured the judge that he was telling the truth .
2) ensure: “确保”普遍用语,指保证某一动作或某一事情的结果,也可用来使某人对某事感到安全有保障。
e.g. To ensure the child’s quick recovery gave him an antibiotic.
3) insure: “保险,投保”。
e.g. He has life insured.
4) guarantee: 指对事物的品质或人的行为作出“保证”。
e.g. The recorder is guaranteed for one year.
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