英语自学网 发表于 2016-7-11 19:49:42

2013年12月英语六级基础语法解析之特定句型

since和for的用法:
  since 用来说明动作起始时间,for用来说明动作延续时间长度;
  eg:I have lived here for more than twenty years.
  I have lived here since I was born.
  for后面多接一段时间,而since后面则接一个时间点,若since后面也出现时间段,则在时间段后加ago;
  eg: I have lived here since twenty years ago.
  错句:I have worked here since many years.
  since句型:
  It is +一段时间+ since从句,since从句要用一般过去时;
  eg:It is two years since I became a postgraduate student.
          编辑推荐:◇ 2013年12月英语六级基础语法解析汇总

          
页: [1]
查看完整版本: 2013年12月英语六级基础语法解析之特定句型