什么样的单数名词前用an

Thereisgoingtobe

here is going to be（将会有）=there will be是there be 句型的将来时结构 There are going to be +名词复数 如There are going to be two meetings this afternoon。 There is going to be +名词单数 There is going to be a meeting this afternoon。 这两句都可用there will be +名词单数/复数代替 are肯定有，如计算机源代码中有句： If you're using version 0。 2 of a ...全部

  here is going to be（将会有）=there will be是there be 句型的将来时结构 There are going to be +名词复数 如There are going to be two meetings this afternoon。
   There is going to be +名词单数 There is going to be a meeting this afternoon。 这两句都可用there will be +名词单数/复数代替 are肯定有，如计算机源代码中有句： If you're using version 0。
  2 of a tool, you know there are going to be bugs。收起