sing的过去式和过去分词是什么
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sing的过去式和过去分词是什么
sing的过去式和过去分词是什么
sing的过去式和过去分词是什么
sing sang sung
sung是过去分词'sang是过去式'sing是原型
过去式和过去分词构成法
1)英语中大部分动词都以加-ed词尾的办法构成过去式及过去分词:
现在时(动词原形) 过去式 过去分词
work ...
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过去式和过去分词构成法
1)英语中大部分动词都以加-ed词尾的办法构成过去式及过去分词:
现在时(动词原形) 过去式 过去分词
work worked worked
appear appeared appeared
talk talked talked
play played played
这类动词称为规则动词(Regular Verbs)。
2)在加-ed 词尾时要注意几个问题:
a.若末尾已有字母e,则只加-d:
live —— lived please —— pleased free —— freed
b.若以“辅音(字母)+y”结尾,先变y为i再加-ed:
try —— tried study —— studied simplify —— simplified
c.若是以“一个元音字母+ 一个辅音字母”结尾,该音节又重读者,末尾字母要双写,然后再加-ed:
stop —— stopped fit —— fitted chat —— chatted
d.其他的词都直接加-ed:
lack —— lacked open —— opened repeat —— repeated
3)另外,还有几点值得注意:
a.以“一个元音+l”结尾的词,英国人都把l双写,美国人都不双写:
travel —— travelled (英),traveled (美)
marvel —— marvelled (美),marveled (美)
b.l前若有两个元音,l一概不双写(英美都如此):
reveal —— revealled appeal —— appealed
c.有少数词,尽管末尾音节并不重读,末尾辅音字母在英国仍双写:
worship —— worshipped (英) ,worshiped (美)
kidnap —— kidnapped (英), kidnapped (美)
但progarm—— programmed(英,美),progarmed(美国人有时用这种拼法)。
d.以x结尾的词,x不双写:
mix —— mixed fix —— fixed
4)在英语中,在加-ed词尾时,末尾字母双写的词常见的有:
ban
chop
drop
grip
knit
net
plan
rub
shrug
slam
star
swap
trap
abet
control
expel
recap
bar
clap
drum
gun
lag
nip
plod
scan
shun
slap
stem
tag
trim
abhor
defer
incur
refer
bat
cram
dub
hop
man
nod
plug
scar
sin
slip
step
tan
trip
acquit
deter
instil
regret
beg
crop
fan
hug
mar
pad
pop
scrap
sip
snap
stop
tap
trot
admit
distil
occur
remit
blot
dam
fit
hum
mob
pat
prop
skrub
skid
sob
strap
thin
wag
allot
emit
omit
repel
brag
dip
flag
jam
mop
pen
rip
ship
skim
spot
strip
throb
wrap
commit
enrol
outwit
submit
brim
dot
grap
jog
mug
pin
rob
shop
skin
squat
stun
tip
compel
equip
patrol
transmit
chat
drag
grin
jot
nag
pit
rot
shred
skip
stap
sun
top
confer
excel
propel
handicap
5)下面的词在加-ed时,在英国末尾字母要双写,而在美国却不一定双写:
cancel
label
program
shrivel
dial
level
quarrel
total
equal
marvel
refuel
travel
hiccup
model
revel
tunnel
initial
pedal
rival
unravel
kidnap
pencil
shovel
worship
注:在加-ing 词尾时,4)中所列词的情况也一样。
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