现在完成时PPT

这是一个关于现在完成时PPT的思维导图，现在完成时（Present perfect）是英语语法中的一种时态，它表示过去发生并且已经完成的动作对现在造成的影响或后果，以及过去某一时间开始并一直持续到现在的动作或状态。

现在完成时 PPT

• 三个定义
  • 影响
    • 过去的动作对现在的影响（好的/不好的影响）
      • e.g:I have had breakfast.
  • 持续
    • 过去的动作持续到现在
      • e.g:I have learned English for six years.
  • 几次
    • 某个动作已经做过了几次
      • e.g:Ihave done the English homework for three times.
• 四个句型
  • 肯定句
    • Sb. have/has(现在完成时标志性词语) done(过去分词)...
    • e.g:I have done my homework.
  • 否定句
    • Sb. haven't/hasn't done...
    • e.g:I haven't had my breakfast.
  • 一般疑问句
    • Have/Has sb done...
    • Yes,I have./No I,haven't.
    • e.g:Have you done the dinner?Yes,I have./No I,haven't.
  • 特殊疑问句
    • 特殊疑问词＋have/has sb done...
    • e.g:What have you done?
• N个时间标志词
  • 1.just 2.since 3.for 4.ever 5.recently 6.over the years 7.before 8.never 9.up to now 10.already 11.so far 12.yet
• Since VS For
  • Since
    • ＋从句(一般过去时）
      • e.g:I have learned English since I was six.
    • ＋时间＋ago
      • e.g:I have learned English since six years ago
    • ＋时间点
      • e.g:I have learned English since 2024
  • For
    • +一段时间
      • e.g:Ihave learned English for six years
• 拓展
  • gone VS been
    • have/has been to+s.p+次数 （去了已回）
    • have/has been in s.p+一段时间 （去了多久）
    • have/has gone to s.p （去了未回）
  • over the years = in the past few years = over the past few years
  • It's years since we last met.=It has been years since we last met.
• 短动作变长动作
• SPT VS PPT
  • 结构
    • was/were/v.ed
    • have/has+done
  • 助动词
    • did
    • have/has
  • 时间标志词
    • 1.ago 2.last 3.testerday...
    • 1.just 2.since 3.for...