一般过去时动词的变化规则学案

这是一份一般过去时动词的变化规则学案，共1页。
lived mved decided declined hped 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 cpied justified cried carried embdied 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： stpped begged fretted dragged drpped planned dtted dripped
注：不规则动词的过去式变化规律性不强，须多加记忆。
g – went make - made get - gt buy - bught cme - came fly-flew
不规则动词的过去式：
a.过去式与动词原形的拼写形式相同：
let → let, put → put, read → read(注意read的过去式读[red])
b. i → a:
begin → began, drink → drank, give → gave, ring → rang, sing → sang, sit → sat, swim → swam
c. i → :
drive → drve, ride → rde, write → wrte
d. w → ew:
grw → grew, knw → knew, thrw → threw
e. 含ugh或augh的：
bring → brught, buy → bught, think → thught；catch → caught, teach → taught
f. am is ---was are ---were d---did can---culd cme---came
不规则动词的过去式平时出现要留心，逐个熟记，注意积累。