名词复数的规则变化
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情况 构成方法 读音 例词
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一般情况 加 -s 1.清辅音后读/s/; map-maps
2.浊辅音和元音后 bag-bags
读 /z/; car-cars
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以s,sh,ch,
x等结尾的词 加 -es 读 /iz/ bus-buses
watch-watches
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以ce,se,ze,
(d)ge等结尾
的词 加 -s 读 /iz/ license-licenses
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以辅音字母+y 变y 为i
结尾的词 再加es 读 /z/ baby---babies
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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
一般在动词原形后加-ed look
call
open
need looked
called
opened
needed
called
opened
needed
③但fix的过去式和过去
分词x不双写,为fixed.
以-e结尾的动词加-d move
phone
hope
agree moved
phoned
hoped
agreed
hoped
以辅音字母加y结尾的动词,变y为i,
再加-ed study
carry
try studied
studied
carried studied [5stQdid]
carried [5kArid]
tried [traid]
以原音字母加y结尾的词,直接加-ed play
enjoy
stay played
enjoyed
stayed played [pleid]
enjoyed [in5dVCid]
stayed [steid]
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
以-r音节结尾的词,双写r字母,
再加-ed prefer
refer preferred
referred preferred
2) 不规则变化
英语中有些动词的过去式和过去分词形式变化不规则,可分为五种情况.
1.动词原形、过去式和过去分词完全同形.
例:
原形 过去式 过去分词
cut(切)
hit(打)
cast(扔)
hurt(伤害)
put(放)
let(让)
shut(关)
cost(花费)
set(放)
rid(清除) cut
hit
cast
hurt
put
let
shut
cost
set
rid cut
hit
cast
hurt
put
let
shut
cost
set
rid
2.过去式与过去分词完全同形.
例:
原形 过去式 过去分词
find(找到)
pay(支付)
leave(离开)
lend(借出)
meet(遇见)
keep(保持)
lose(丢失)
teach(教)
sit(坐)
lead(引导)
win(赢)除) found
paid
left
lent
met
kept
lost
taught
sat
led
won found
paid
left
lent
met
kept
lost
taught
sat
led
won
3.动词原形与过去分词同形
例:
原形 过去式 过去分词
come(来)
run(跑)
become(成为) came
ran
became come
run
become
4.动词原形、过去式、过去分词形式完全不同.
例:
原形 过去式 过去分词
give(给)
fly(飞)
drink(喝)
see(看见)
go(去)
know(知道)
wear(穿)
speak(说) gave
flew
drank
saw
went
knew
wore
spoke given
flown
drunk
seen
gone
known
worn
spoken
5.过去式和过去分词有两种形式
例:
原形 过去式 过去分词
burn(燃烧) burned
burnt burned
burnt
learn(学习) learned
learnt learned
learnt
smell(闻) smelled
smelt smelled
smelt
spell (拼写) spelled
spelt spelled
spelt
shine (照射) shined
shone shined
shone
leap (跳) leaped
leapt leaped
leapt
提示
a. beat的过去式与原形同形:
比:beat(打击) beat(过去式) beaten(过去分词)
b. lie有规则变化和不规则变化两种,含义不同
比:lie lied, lied(说谎)
lay, lain(躺,位于)
c. hang 有规则变化和不规则变化两种,含义不同
比:hang hanged, hanged(处绞刑)
hung, hung(挂,吊)
d. welcome(欢迎)一词是规则动词,不可误用为不规则动词
比:welcome welcomed, welcomed(正)
welcome, welcome(误)
e.不要将不规则动词误用为规则动词
比:hit(打) hit, hit(正)
hitted, hitted(误)