规则动词的过去式词尾变化有几种：
1．一般情况下加ed，如watched,
planted,
watered,
pulled,
climbed,
picked。
2．以不发音字母e结尾的加d，如liked,
moved,
tasted。
3．以辅音字母加y结尾的变y为i再加ed，如study——studied。
4．以1个元音字母加1个辅音字母结尾的重读闭音节，双写最后一个辅音字母再加ed，如stop——stopped。
词尾读音有3种：
a．在浊辅音和元音后读[d]，如lived,
watered,
listened,
played。
b．在清辅音后读[t]，如liked,
helped,
watched。
c．在[t],[d]音后读[Id]，如planted,
wanted,
handed(上交)。
不规则动词的过去式变化则没有什么规律，请大家背熟记牢：
sit
——
sat
throw
——
threw
am,
is
——
was
drink
——
drank
draw
——
drew
are
——
were
sing
——
sang
fly
——flew
do
——
did
begin
——
began
grow
——
grew
have,
has
——
had
swim
——
swam
put
——
put
may
——
might
give
——
gave
cut
——
cut
can
——
could
ring
——
rang
let
——
let
shall
——should
run
——
ran
read
——
read
will
——
would
ride
——
rode
catch
——
caught
go
——
went
write
——
wrote
teach
——
taught
eat
——
ate
drive
——
drove
think
——
thought
hear
——
heard
keep
——
kept
buy
——
bought
see
——
saw
sleep
——
slept
fight
——
fought
find
——
found
sweep
——
swept
hold
——
held
wear
——
wore
feel
——
felt
tell
——
told
meet
——
met
come
——
came
get
——
got
mean
——
meant
become
——
became
make
——
made
speak
——
spoke
take
——
took
say
——
said
1）is,
am
-was
are-were
2)
begin-began
ring-rang
drink-drank
swim-swam
give-gave
sing-sang
sit-sat
run-ran
have-had
make-made
come-came
eat-ate
3)
write-wrote
ride-rode
speak-spoke
drive-drove
stand-stood
tell-told
win-won
get-got
take-took
4)
sleep-slept
sweep-swept
feel-felt
keep-kept
spell-spelt
spend-spent
bend-bent
meet-met
go-went
5)
know-knew
fly-flew
blow-blew
grow-grew
throw-threw
draw-drew
(glow-glowed)
6)
teach-taught
catch-caught
buy-bought
fight-fought
think-thought
7)
find-found
hear-heard
say-said
lie-lay
see-sawlearn-learnt
mean-meant
8)
put-put
read-read
cut-cut
let-let
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