动词原形

第三人称单数

work(工作)
stop(停止)

works
stops

以-ch, -sh, s, x, o结尾

词尾+es

teach(教)
wash(洗)
dress(装扮)
fix(安装)
go(去)

teaches
washes
dresses
fixes
goes

以“辅音字母+y”结尾

变y为i，再加es

fly(飞翔)
try(尝试)

flies
tries

不规则变化have和be动词 变have为has 变be为am,is,are例: have-has; be-am,is,are

一般现在时的特殊用法:
一些动词可用一般现在时来表达现在进行时：
verbs of the senses: hear,see,taste,smell，feel
verbs of the thinking: believe,know,mean,realize,think,remember
verbs of the linking: dislike,fear,heat,like,love,want
verbs of the possession: belong,have,own,possess

考点名称：一般过去时，动词过去式

• 一般过去时：
  表示过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为；过去主语所具备的能力和性格。
  be动词在第一人称是单数和第三人称是单数是用was，其余用were。
  a. 表示在过去时间里所发生的动作或存在的状态，常与表示过去的时间状语。
  yesterday（昨天）、last week   （上星期）、an hour ago（一小时前）等连用。 
    例：I went to the zoo with my father last Sunday. 上周日我和我爸爸去动物园了。
       They weren't able to come because they were so busy.他太忙了，所以去不了。
  b. 表示在过去一段时间里，经常性或习惯性的动作或状态。 
    例：My brother watched the World Cup every day last month.上个月哥哥每天都看世界杯比赛。

• 一般过去时句法结构：
  肯定形式
  主语+动词过去式+其他
  例句：She often came to help us in those days.
  
  否定形式
  ①was/were+not；②在行为动词前加didn't，同时还原行为动词
  例句：I didn't know you like coffee
  
  一般疑问句
  ①Did+主语+do+其他？ ②Was\Were+主语+表语?
  例句：Did I do that?
  用表格整理如下：

  肯定式	疑问式	否定式	疑问否定式
  Iworked	Did I work?	I did not work	Did I not work?
  He(She,It) worked	Did he(she,it) work?	He(she,it) did not work	Did he(she,it) notwork?
  We worked	Did we work?	We did not work	Did we not work?
  You worked	Did you work?	You did not work	Did you not work?
  They worked	Did they work?	They did not work	Did they not work?

  
  结构句型:
  1．一般句子
  I watched TV last night.
  2．一般疑问句
  Did you watch TV last night？
  3．there be 句型
  There was an apple on the table last night.
  Was there an apple on the table last night

• 一般过去时用法口诀：
  一般过去时并不难，过去动作、状态记心间。
  动词要用过去式，时间状语句末站。
  否定句很简单，didn't 站在动原前，其它部分不要变。
  一般疑问句也好变，did放在句子前，主语、动原、其它部分依次站。
  特殊疑问句也简单，疑问词加一般疑问句记心间。
  最后一条请注意，动词过去式要牢记！

•  过去式和过去分词的构成表：
  

  词	构成	举例
  一般情况	词尾+ed	动词原形	过去式和过去分词
  		look talk	looked talked
  以不发音字母e结尾	词尾+d	like arrive	liked arrived
  以“辅以字母+y”结尾	变y为i，再加ed	fly study	flied studied
  以重读闭音节结尾，且末尾只有一个辅音字母	双写词尾+ed	stop plan	stopped planned

  不规则变化的动词过去式：
  have---had are---were get---got say---said feel---felt do/does---did is---was go---went   drink--drank eat--ate bring----brought think----thought
  buy----bought catch---- caught teach ---- taught sit----sat wear----wore cut----cut sweep----swept sleep——slept become----became