551、vouch that …… / for sb ：为sth或sb担保

         a、When I moved into my new apartment,I got my bank to vouch that I could pay my rent.

552、fall on difficult times ：手头没钱，陷入困境

         a、After he lost his job,he began to fall on difficult times.

         b、The country fell on difficult times during its civil war.

553、ignorance ：无知

         a、Because of his ignorance of driving rules,he went through a red light.

554、flatter sb ：拍sb马屁，讨好sb

         a、She flatters herself that she's very beautiful,but I don't like her that much.

555、under the impresson，have an impression ：原以为（事非如此）

         a、I was under the impression that Shanghai is very close to Beijing,but actually it's about two

              hours by air.

556、quest ：a long difficult journey，长途跋涉

         a、I had to go on a quest to buy milk,nothing is open at this time of night.

557、cha'rade ：假象

         a、The story about him having a car was just a charade.He only wanted to impress us he uses

              a bike.

558、swear on oath ：发誓，宣誓

         a、In court you have to swear on oath that you will tell the truth.

         b、In Britain the army swears on oath of queen.

559、a piece of work ：指人非常阴险

         a、She's really a piece of work.She gossips all her friends behind their backs.

560、please sb ：让sb感到快乐、满意

         a、The restaurant really pleased me.Both the food and service are excellent.