Tenses formulae.

darksider

Tenses

Present
Present Simple = He/She/It          I      You/We/They
                                        is                /am     /are
                                       Has                /have
                              Singular(verb+s)    /Plural (verb no s)
Function:To show habitual action / To show facts
Present Continuous=Is/am/are + Present participle (verb + ing)
Function: To show action happening at the moment of speaking.
Present Perfect=has/have + past participle
Function:To show completed action.
Present Perfect Continuous=has/have + been + present participle
Function:To show action happening continuously without interruption      

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Past
Past Simple = was/were
                           Had
                         verb+ed()
Function:To show action that happened and stopped.

Past Continuous=was/were + present participle
Function:To show action happening continuously at the moment of speaking

Past Perfect= had + past participle
Function:To show completed action.(Usually used to show something happen before a particular event, eg He had done his assignment before i came.)
Past Perfect Continuous= had + been + present participle
(To show action happening continuously without interruption)
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Future
Future simple= will + verb
           or Is/am/are + going to + verb
          eg I will attend the lesson later

Future continuous= will + be + present participle
               eg: I will be playing the game on Sunday.

Future perfect = will+ have + past participle
                or Is/am/are + going to have  + past participle
               eg: I will have finished my work tomorrow.






[ 本帖最后由 darksider 于 7-3-2008 01:58 AM 编辑 ]

Summer_kaze

如果用timeline來解釋會更好

darksider

等我考試完了才做

darksider

好了，更新了..........

Legend

what is tense?
tense = time

Basic concept
1)affects only on verb
2)A verb has different ways of spelling according to the time frame.
  同一个动词，在不同的时间，有不同的写法。
e.g.
Today      Tommorrow      yesterday
plays       play            played

when we learn tenses, we must focus on 2 type of technique to expect.
it is PATTERN and USES.
There are 13 tenses that i know. XD
a) Past Perfect Progressive
b) Past Perfect
c) Past Progressive
d) Simple Past
e) Present Perfect Progressive
f) Present Perfect
g)Present Progressive
h)Simple Present
i)will-Future
j)will-Future Progressive
k)will-Future Perfect
l)will-Future Perfect Progressive
m)Going-to-Future
(I don't know correct or not...)
Pattern and Uses next time then write again..