词汇精选：assurance的用法和辨析
一、详细释义：
n.
保证，担保 [U,C]
例句：
He gave me his assurance that the goods should be delivered tomorrow morning.
他向我保证货在明天早上送到。
例句：
He gave me an assurance that it would be ready by Friday.
他向我保证星期五一定准备好。
确信；断言 [U]
例句：
The teacher lacked assurance in front of his class.
那位教师在学生面前缺乏自信。
例句：
We have full assurance of the results.
我们对于其结果非常确信。
保险 [C]
例句：
Tom decided to buy a life assurance of one hundred thousand dollars.
汤姆决定买十万美元的人寿保险。
例句：
Person employed by an in assurance company to calculate premium.
保险公司雇用的计算保险费的人。
厚脸皮，无耻
例句：
He had the assurance to ask me for money.
他竟厚着脸皮向我要钱。
例句：
He had the assurance to say so.
他厚著脸皮说话。
二、词义辨析：
certainty,assurance,conviction
这些名词均含有“确信无疑”之意。certainty指在客观上和主观上都无一丝一毫的怀疑。assurance侧重依靠个人力量、本能、方法或对其他人或事的完全信任，强调有信心。conviction多指在理性基础上清除了原有的疑虑或无把握，着重对证据的主观反应。
三、相关短语：
life assurance
n.(=life insurance)人寿保险,(保险公司付给的)人寿保险金,(被保险人缴纳的)人寿保险费
四、参考例句：
He has a life assurance.
他投保了人寿保险。
He had the assurance to say so.
他厚著脸皮说话。
We have full assurance of the results.
我们对于其结果非常确信。
How can I find International Dose Assurance Service?
我怎样才能找到国际剂量保证服务处？
He had the assurance to ask me for money.
他竟厚着脸皮向我要钱。
Quality assurance is mainly focused on intended product.
质量保证主要关注预期的产品。
The bank needed some assurance that the loan be repaid.
银行需要客户做出某种能偿还贷款的保证。
Person employed by an in assurance company to calculate premium.
保险公司雇用的计算保险费的人。
The teacher lacked assurance in front of his class.
那位教师在学生面前缺乏自信。
He gave me an assurance that it would be ready by Friday.
他向我保证星期五一定准备好。
