|
一般过去时和现在完成时 用法
补充过去发生并且已经完成的动作对现在造成影响或后果
过去某一时间开始并一直持续到现在的动作或状态
[编辑本段]句型
基本结构:主语+have/has+过去分词(done)
①肯定句:主语+have/has+过去分词+其他
②否定句:主语+have/has+not+过去分词+其他
③一般疑问句:Have/Has+主语+过去分词+其他
④特殊疑问句:特殊疑问词+一般疑问句(have/has+主语+过去分词+其他)
[编辑本段]过去分词
1 、规则动词:规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则:
(1)、一般动词,在词尾直接加“ ed ”。
work---worked---worked ,visit---visited---visited
(2)、以“ e ”结尾的动词,只在词尾加“ d ”。
live---lived---lived ,
(3)、以“辅音字母 + y ”结尾的动词,将 "y" 变为 "i" ,再加“ ed ”。
study---studied---studied ,cry---cried---cried ,
play---played---played ,stay---stayed---stayed
(4)、重读闭音节结尾,末尾只有一个辅音字母,先双写该辅音字母,再加“ ed ”。
stop---stopped---stopped , drop---dropped--dropped
2 、不规则动词:
AAA型
原型 过去式 过去分词
burst burst burst
cast cast cast
cost cost cost
cut cut cut
hit hit hit
hurt hurt hurt
put put put
set set set
shut shut shut
spread spread spread
let let let
AAB型
beat beat beaten
ABA型
become became become
run ran run
come came come
特殊情况
read read read
read原形发音为/ri:d/,过去式和过去分词发音为/red/
ABB型
bring brought brought
buy bought bought
build built built
burn burnt burnt
catch caught caught
dig dug dug
feel felt felt
fight fought fought
find found found
hear heard heard
hold held held
keep kept kept
lay laid laid
lead led led
lose lost lost
make made made
meet met met
sell sold sold
shoot shot shot
sit sat sat
stand stood stood
sweep swept swept
teach taught taught
tell told told
think thought thought
win won won
ABC型
begin began begun
blow blew blown
break broke broken
choose chose chosen
draw drew drawn
drive drove driven
drink drank drunk
fly flew flown
forgive forgave forgiven
forget forgot forgotten
freeze froze frozen
give gave given
grow grew grown
know knew known
ride rode ridden
rise rose risen
ring rang rung
shake shook shaken
sing sang sung
sink sank sunk
swim swam swum
throw threw thrown
write wrote written
[编辑本段]用法
(1)现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在。
I have spent all of my money。(含义是:现在我没有钱花了。)
Jane has laid the table。(含义是:现在桌子已经摆好了。)
Michael has been ill。(含义是:现在仍然很虚弱)
He has returned from abroad. (含义是:现在已在此地)
(2)现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作(用行为动词表示)或状态(be动词表示)常与for(+时间段),since(+时间点或过去时的句子)连用。
Mary has been ill for three days。
I have lived here since 1998.
注(超重要):瞬间动词(buy,die,join,lose……)不能直接与for since 连用。要改变动词
come-be
go out-be out
finish-be over
open-be open
die-be dead
………………
1.have代替buy
My brother has had(不能用has bought) this bike for almost four years。
2、用keep或have代替borrow
I have kept(不能用have borrowed) the book for quite a few days。
3、用be替代become
How long has your sister been a teacher?
4、用have a cold代替catch a cold
Tom has had a cold since the day before yesterday。
5、用wear代替put on
b)用“be+形容词”代终止性动词
1、be+married代marry 2、be+ill代fall (get) ill
3、be+dead代die 4、be+asleep代fall (get) asleep
5、be+awake代wake/wake up 6、be+gone代lose,die,sell,leave
7、be+open代open 8、be closed代close/shut
9、be+missing(gone,lost)代lose
c)用“be+副词”代终止性动词
1“be+on”代start,begin
2“be+up”代get up
3“be+back(to)”代return to,come back to,go back to
4“be here (there)”代come(arrive,reach,get) here或go (arrive,reach,get) there等等
d)用“be+介词短语”代终止性动词
1.“be in/at +地点”代替go to /come to
2.用be in the army 代替join the army
3.“be in/at +地点”代替move to