everyday misson

sentence:
  Chances are slim..
  Far from it..
  I'm behind in my work..
  We're in the same boat..
  My mouth is watering..
  It's a pain in the neck..
  What do you recommend?

key words and expressions:
  swallow     吞下,吞咽           slim           苗条的,不足取的
  dining            吃饭                toilet          厕所
  bathroom    浴室                  rest room   公共厕所
  washroom    厕所

pattern drill:
  What was your wife doing while you were you working in the garden?
  What was your husband doing while you were cooking the dinner?
  My wife was cooking the dinner while I was working in the garden.
  My husband was working in the garden while I was cooking the dinner..
  When did he cut himself?
  He cut himself while he was shaving..

syntax: 
  过去进行时       were/was + 现在分词
  While we were having breakfast,our son put two coins into his mouth..
  Just as I was buying the tickets,the train left..
  He phoned me when I was doing the housework..
  just as  强调一个时间点       
  while    强调一段时间
  when     使用最宽泛

  三者以上用:  them all
  两者用       both 但必须注意位置
  有be动词时,跟在后面        They are both students..
  而有行为动词时,在动词前面  We both tried to get the coins..
  过去完成时  had + 过去分词    had swallowed..