一般过去式表将来?如题 尤其是if条件句中
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/21 09:01:47
一般过去式表将来?
如题 尤其是if条件句中
如题 尤其是if条件句中
规则动词过去式只记规则就可以了,要什么表?
规则动词的过去式变化如下:
一般情况下,动词词尾加 -ed ,如:
worked played wanted acted
以不发音的 -e 结尾动词,动词词尾加 -d,如:lived moved decided declined hoped judged raised wiped
以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如:
studied tried copied justified cried carried embodied emptied 以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如:stopped begged fretted dragged dropped planned dotted dripped 注:不规则动词的过去式变化规律性不强,须多加记忆.
go - went make - made get - got buy - bought come - came fly-flew
不规则动词的过去式的构成
1.把动词原形中的i改为a,变成过去式.如:
begin—began,drink—drank,give—gave,ring—rang,sing—sang,sit—sat,swim—swam
2.把重读开音节中的i改为o,变成过去式.如:
drive—drove,ride—rode,write—wrote
3.改动词原形中的aw /ow为ew,变成过去式.如:
draw—drew,grow—grew,know—knew,throw—threw(动词show除外,show—showed)
4.动词原形中的e改为o,变成过去式.如:
get—got,forget—forgot
5.动词原形中的ee改为e,变成过去式.如:
feed—fed,meet—met
6.动词原形中的eep改为ept,变成过去式.如:
keep—kept,sleep—slept,sweep—swept
7.动词原形中的eak改为oke,变成过去式.如:
break—broke,speak—spoke
8.动词原形中的ell改为old,变成过去式.如:
sell—sold,tell—told
9.动词原形中的an改为oo,变成过去式.如:
stand—stood,understand—understood
10.以ought和aught结尾,且读音是〔 :t〕的过去式.如:
bring—brought,buy— bought,think—thought,catch—caught,teach—taught
11.以ould结尾且读音为〔ud〕的情态动词过去式.如:
can—could,shall—should,will—would
12.把动词原形中的o改为a,变成过去式.如:
come—came,become—became
13.在动词原形后加d或t变成过去式,并且发生音变.如:
hear〔hi 〕—heard〔h :d〕,say〔sei〕—said〔sed〕,mean〔mi:n〕—meant〔ment〕
14.动词的过去式与动词原形一样.如:
let—let,must—must,put—put,read—read〔red〕
15.不符合上述规律的动词过去式.如:
am,is—was,are—were,build—built,do—did,eat—ate,fall—fell,feel—felt,find—found,fly—flew,go—went,have /has— had,hold—held,leave—left,make—made,may—might,run—ran,see—saw,take—took
规则动词的过去式变化如下:
一般情况下,动词词尾加 -ed ,如:
worked played wanted acted
以不发音的 -e 结尾动词,动词词尾加 -d,如:lived moved decided declined hoped judged raised wiped
以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如:
studied tried copied justified cried carried embodied emptied 以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如:stopped begged fretted dragged dropped planned dotted dripped 注:不规则动词的过去式变化规律性不强,须多加记忆.
go - went make - made get - got buy - bought come - came fly-flew
不规则动词的过去式的构成
1.把动词原形中的i改为a,变成过去式.如:
begin—began,drink—drank,give—gave,ring—rang,sing—sang,sit—sat,swim—swam
2.把重读开音节中的i改为o,变成过去式.如:
drive—drove,ride—rode,write—wrote
3.改动词原形中的aw /ow为ew,变成过去式.如:
draw—drew,grow—grew,know—knew,throw—threw(动词show除外,show—showed)
4.动词原形中的e改为o,变成过去式.如:
get—got,forget—forgot
5.动词原形中的ee改为e,变成过去式.如:
feed—fed,meet—met
6.动词原形中的eep改为ept,变成过去式.如:
keep—kept,sleep—slept,sweep—swept
7.动词原形中的eak改为oke,变成过去式.如:
break—broke,speak—spoke
8.动词原形中的ell改为old,变成过去式.如:
sell—sold,tell—told
9.动词原形中的an改为oo,变成过去式.如:
stand—stood,understand—understood
10.以ought和aught结尾,且读音是〔 :t〕的过去式.如:
bring—brought,buy— bought,think—thought,catch—caught,teach—taught
11.以ould结尾且读音为〔ud〕的情态动词过去式.如:
can—could,shall—should,will—would
12.把动词原形中的o改为a,变成过去式.如:
come—came,become—became
13.在动词原形后加d或t变成过去式,并且发生音变.如:
hear〔hi 〕—heard〔h :d〕,say〔sei〕—said〔sed〕,mean〔mi:n〕—meant〔ment〕
14.动词的过去式与动词原形一样.如:
let—let,must—must,put—put,read—read〔red〕
15.不符合上述规律的动词过去式.如:
am,is—was,are—were,build—built,do—did,eat—ate,fall—fell,feel—felt,find—found,fly—flew,go—went,have /has— had,hold—held,leave—left,make—made,may—might,run—ran,see—saw,take—took
一般过去式表将来?如题 尤其是if条件句中
if条件句虚拟语气中 表将来 只有有...should...能倒装吗?
it would take请问为是么是would,if引导的条件句不是用一般现在表将来吗.
在虚拟语气中,当表与将来相反时,if条件句可以用三种情况.三种有区别吗?
请问if引导的虚拟条件句中对将来虚拟的主从句时态
过去式,现在进行式,一般将来式,每个两句
If 引导的虚拟语气中,对将来情况的虚拟if条件句的结构是什么?怎么理解呢?
为什么as if虚拟语气表将来有两种情况 一种是should/could/might+do 一种是加一般过去式
unless和if引导的条件状语从句中,用一般现在时表将来,现在完成时表将来完成时.
关于if真实条件句,主从句都是过去式,
虚拟语气中,Should引导的if条件句,should只能用在将来式的条件句中,并且是should+动词原型.那为什么会
虚拟语气中当表示与将来相反时,if条件句可以用三种情况,这三种有什么区别吗?