八种时态，一般(现在/过去/将来)时，(现在/过去/将来)进行时，(现在/过去)完成时
 //三个一般为各种时态的基础

1. 一般现在时
 1)一般性描述，谓语是am/is/are或实义动词，如：I am a student/I love you
 2)否定是在be动词后加not或实义动词前加don't/doesn't(主三单时)
 3)疑问是be动词提前，实义动词前加do/does
 4)特殊疑问句前再加特殊疑问词
2. 一般过去时
 1)be动词am/is变was，are变were。实际动词加d/ed。如：I was busy yesterday/He cleaned the window.
 2)实义动词的变化：一般加ed，以e结尾加d，辅音+y变y为i加ed，元音+辅音并重读的双写辅音加ed
 3)实义的不规则变化：go-went/see-saw/run-ran
 4)否定：was/were后加not，实义词后加didn't
 5)疑问：was/were提前，或did提前，疑问句的动词要还原
3. 一般将来时
 1)will+动原或be going to+动原  //am/is/are的动原是be 例：I will be rich/I'm going to diet
 2)否定：will后加not 缩写：you will=you'll will not=won't
 3)疑问与特疑：will提前，will you be rich?/When will you change your job?
4. 现在进行时
 1)Be动词+实义动词的ing形式，例：I am reading a book/she is singing.
 2)否定：be后加not 例：He is not singing
 3)疑问：be提前 例：Is he singing
 4)特疑：疑问前再加特疑词，例：what is he singing?/what are you doing?
5. 过去进行时
 1)was/were+实义动词的ing形式 例：I was watching TV for eight to nine last night.
6. 将来进行时
 1)will be+实义动词的ing形式  例：I will be watching TV for eight to nine tomorrow night
7. 现在完成时，动作发生成过去，现在已经完成
 1)have/has+动过分，has接主三单，例：Tom has gone out.
 2)否定：have/has后加not，如：Tom has not gone out.
 3)疑问：have/has提前，如：Has Tom gone out?
 4)动词过分变化大多同过去式一样，仅不规则有区别，如：go-gone，//been是be的过去分词
8. 过去完成时
 1)had(have/has的过去式)+动过分 例：He had worked there before 1980.
 2)否定：had后加not 例：He had not worked there before 1980.
 3)疑问：had提前  例：Had he worked there before 1980.
9. 被动语态
 1)be+动过分  //被动语态的时态有10种都在be上变化，根据时态不同be可以是am/is/are/was/were/have/has/had等
  I am invited/I was invited./I will be invited. 我被邀请/我过去被邀请/我将被邀请//分别是现被/过被/将被
 2)变被动：原宾做主——原动改be+动过分——用by引了原主 //be要和新主语的人称，数和时态一致
 3)总结：只有现完与过完，及被动用了动过分，所以现完和过完在变被动时句中会有两个动过分。
  如： The car has/had been repaired by then man. //现完被/过完被 ，刚被修好，已经被修好