现在完成时常用的时间副词

sentence:
  Did u find the film disappointing?
  Don't get on my nerves..
  What do u think u r?
  U r wasting your breath..
  Everything will be fine..
  Come to me if u in any difficulty..
  It doesn't seem like that..
 
key words and expressions:
  Alice       艾丽丝              breath           呼吸,气息
  difficulty  困难,难点         Tibet            西藏
  literature  文学                  nerve            神经,胆量
  firm        公司,结实的      law firm         律师事务所
  centre      中心区,中央    a great number of 多数的(可数)
  Dawin       达尔文           waste            浪费,废物
  abroad      在国外,到处

pattern drill: 
  I have just received a letter from my brother.. 
  He has gone to the south.. 现在已经去了
  He has been to the south.. 去过(已经回来)
  I find this book very interesting..
  He has bought an Australian car and he has gone to Alice Springs.. 
 
syntax: 
  现在完成时常用的时间副词 just/already/not yet/since/so far
  upon to now已常用于现在完成时
  I just have arrived by train..
  He has already left..
  I haven't had lunch yet..
  I haven't heard from him since then..
  The weather has been good so far..