everyday misson

sentence:
  Let's call it a day..
  Someting's come up..
  Keep that in mind..
  I couldn't help it..
  I'll be look forward to it..
  Let's get to the point..
  That was a close call..

key words and expressions:
  knock   敲打,击打       invite      邀请,引起
  joke    开...玩笑       lemonade    柠檬汁
  quiet   安静,静止的     quite       相当,十分
  knock on    knock at     敲门(加介词)

pattern drill:
  Everybody arrived nice and early...   nice本身无意思,是为加强语气用
  There is none left./Is there any coffee left?      left指剩下的
  Everything's very quiet..
  Can you see anything?
  There's nobody/no one at home..
  There must be somewhere..

syntax: 
  不定代词=>
   no/any/some/every + thing/one/body/where 构成
   其都为单数形式,如=>
      everybody is asleep..
      everyone is asleep..
      everything is untidy..
   I looked for my pen everywhere..