assure和ensure的区别最好带例句哦

assure和ensure的区别最好带例句哦

assure 表示向某人保证某事一定会发生(内含有让某人放心之意，以消除疑虑) assure sb. of sth /assure sb. that...　　He assured us of his ability to solve the problem.　　他向我们保证他有能力解决这个问题。　　The witness assured the judge that he was telling the truth .　　ensure "确定，保证" 确保某种行为一定会发生 ensure sth. /ensure that..　　I will ensure that the car arrives by six o'clock.　　我保证汽车六点钟以前到。　　This medicine will ensure you a good night's sleep.　　这药能保证你睡一夜好觉。