r结尾的动词变过分词都要双写r?
重音在最后一个音节的需要双写，通常限于这四个单词：prefer，refer，occur，transfer，其他的直接加ed
动词过去式、过去分词变化规则
一、规则变化：
1. 一般在动词原形后加-ed
look -> looked; need -> needed
2. 以-e结尾的动词加-d
move -> moved
3. 以辅音字母加y结尾的动词，变y为i，再加-ed
carry -> carried; study -> studied
4. 以元音字母加y结尾的词，直接加-ed
stay -> stayed; play -> played
5. 末尾只有一个辅音字母的重读闭音节词，双写该辅音字母，再加-ed
stop -> stopped; regret -> regretted
（但fix的过去式和过去分词x不双写，为fixed）
6. 以-r音节结尾的词，双写r字母，再加-ed
refered -> referred; prefer -> preferred
二、对于不规则变化，也有些规律可循，下面归纳得不错：
动词过去式、过去分词不规则变化
AB型
can could shall should
will would may might
AAA型
cost cost cost
cut cut cut
hit hit hit
hurt hurt hurt
let let let
must must must
put put put
set set set
shut shut shut
read read read
AAB型
beat beat beaten
ABA型
become became become
come came come
run ran run
ABB型
bring brought brought
buy bought bought
think thought thought
catch caught caught
teach taught taught
build built built
lend lent lent
send sent sent
spend spent spent
dig dug dug
hang hung hung
feel felt felt
keep kept kept
sleep slept slept
sweep swept swept
leave left left
smell smelt smelt
spill spilt spilt
lay laid laid
pay paid paid
say said said
sell sold sold
tell told told
sit sat sat
spit spat spat
stand stood stood
understand understood understood
learn learnt learnt
mean meant meant
spoil spoilt spoilt
shine shone shone
win won won
have had had
make made made
hear heard heard
find found found
hold held held
ABC型
begin began begun
drink drank drunk
ring rang rung
sing sang sung
sink sank sunk
swim swam swum
blow blew blown
fly flew flown
grow grew grown
know knew known
throw threw thrown
draw drew drawn
show showed shown
break broke broken
choose chose chosen
forget forgot forgotten
freeze froze frozen
speak spoke spoken
wake woke woken
drive drove driven
eat ate eaten
fall fell fallen
give gave given
hide hid hidden
ride rode ridden
rise rose risen
take took taken
mistake mistook mistaken
write wrote written
am,is was been
are were been
do did done
go went gone
lie lay lain
see saw seen
wear wore worn
易错型
show showed shown
draw drew drawn
fall fell fallen
feel felt felt
hold held held
help helped helped
think thought thought
thank thanked thanked
take took taken
talk talked talked
get got got
forget forgot forgotten
meet met met
mean meant meant
hit hit hit
hide hid hidden
ring rang rung
bring brought brought
eat ate eaten
beat beat beaten
lie lay lain
lay laid laid
find found found
found founded founded
buy bought bought
bring brought brought
learn learnt learnt
hear heard heard
听写时出问题，补充：
fly flew flown
flow flowed flowed
regret regretted regretted
1.如果以元音或者浊辅音结尾，一律读作/d/；如bothered/d/;
played；
rubbed/bd/
2.以辅音结尾，一律读作/t/。如helped/pt/;
looked/kt/
3.以/t/和/d/两个辅音结尾的，读作/id/。如wante籂顶焚雇莳概锋谁福京d/tid/。
不是，只有当末音节是重读闭音节，且以单个辅音字母结尾时，才要双写。
不一定都是呀，要视情况来定~~~~~~~~~~~~
是啊，不是那样的．
refer
prefer
等
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萧县13012359227： 为什么prefer的过去式要双写r - ？
家应斑蝥： 以er,or,ir,ur,ar字母组合结尾的单词称r音节,r音节单词不属于开音节或闭音节,是另外一种不 同的音节.ru音节结尾的动词的动名词,现在分词,过去式及过去分词都要先双写,谢谢!
萧县13012359227： 英语单词中变过去式需要双写末尾字母的单词 - ？
家应斑蝥： 是以重读闭音节结尾,末尾又只有一个辅音字母时,将末尾的辅音字母双写再加-ed. 例如 put、drag 例外: 1、以r结尾,末尾音节又重读的r要双写,如prefer-preferred.如r前为双元音时,r则不需双写.如,appear-appeared; 个别以r结尾的单音节要双写:star-starred;bar-barred. 2、以l结尾,l前为长音,则l一概不双写,如:reveal-revealed. 3、以x结尾的词直接加ed.
萧县13012359227： 动词ING形式、过一般过去、过去分词什么时候要双写最后一个字母? - ？
家应斑蝥： 动词过去式,动词过去分词(-ed)是以重读闭音节结尾,末尾又只有一个辅音字母时,将末尾的辅音字母双写再加-ed.例外: 1、以r结尾,末尾音节又重读的r要双写,如prefer-preferred.如r前为双元音时,r则不需双写.如,appear-...
萧县13012359227： 动词由原形变为过去分词的规则变化是怎样 - ？
家应斑蝥： 动词过去式和过去分词的变化规则 动词过去式和过去分词有规则变化和不规则变化两种. 1) 规则变化 情况 例词 读音与说明 动词原形 过去式 过去分词 一般在动词原形后加-ed look call open need looked called opened needed looked [lukt] ...
萧县13012359227： prefer过去式为什么双写r - ？
家应斑蝥： 以重读闭音节结尾的单词,如果末尾是辅音字母,则双写该辅音字母.offer重读在前面 prefer重读在后面 所以offer不双写prefer要双写,详细可以去http://baike.baidu.com/view/600590.htm了解重读闭音节 希望你满意!
萧县13012359227： 动词变过去分词的时候什么样的词最后一个字母要双写 - ？
家应斑蝥： 辅音+元音+辅音 如:stop 其中t是辅音字母, o是元音字母 p是辅音字母 所以 stop 的过去式是stopped 元音字母是:a e i o u 除了这五个字母以外 都是辅音字母
萧县13012359227： 英语单词变为过去式是,什么时候需要双写最后的字母希望举一些例子,要初学者好接受的讲解! - ？
家应斑蝥：[答案] 是以重读闭音节结尾,末尾又只有一个辅音字母时,将末尾的辅音字母双写再加-ed. 例如 put、drag 例外: 1、以r结尾,末尾音节又重读的r要双写,如prefer-preferred.如r前为双元音时,r则不需双写.如,appear-appeared; 个别以r结尾的单音节要...
萧县13012359227： 什么动词的过去式最后的字母要双写啊? - ？
家应斑蝥： 末尾只有一个辅音字母的重读闭音节词,双写该辅音字母,再加-ed stop plan fit stopped planned fitted stopped [stCpt] planned [plAnd] fitted [5fitid] 以-r音节结尾的词,双写r字母, 再加-ed prefer refer preferred referred preferred [prI`f:d] referred [ri5fE:]
