The most exciting experience最激动人心的经历, before long不久,

　　long before=soon=a little later很久以前, no problem没问题,

　　have a problem in doing sth.做某事有困难, work out a problem解决一个问题,

　　invite sb to do sth,邀请某人做某事 invite sb to some place邀请某人去某地,

　　one day,某一天,(过去或将来) some day某一天(将来) ,

　　连系动词,一是be (am, is ,are ,was ,were,)一感觉feel ,一保持keep,三变become, get turn,

　　四起来taste ,smell , look, sound,后跟形容词作表语。

　　不定代词:somebody, some one某人,anybody,anyone任何人nobody,no one,没人everyone,everybody每个人,something某物 ,anything任何物,nothing没事,everything一切事物,修饰他们的形容词放后。

　　different kinds of =all kinds of 不同种类的,各种各样的,

　　by the end of 到…末为止,不迟于

　　give a concert=give concerts举办音乐会

　　in the end =finally最后,终于,

　　take a photo=take photos照相,店 cook sth for sb.=cook sb.sth. 为某人做饭buy,make