动词变三单:
动词第三人称单数的变化规则:
①、一般情况下,词尾力口 s,如;like----likes, want----wants.
② 、 以 s, x, ch, sh, o 结尾的力口 es, 如, watch——watchey 结尾动词,y 变 i 力口 ed: worried;studied.
?把动词原形中的i 改为 a, 变成过去式。如:
begin — began , drink — drank , give — gave , ring— rang , sing — sang , sit — sat , swim — swam
.把重读开音节中的i改为o,变成过去式。如: drive - drove, ride—rode, write - wrote
改动词原形中的aw /ow为ew,变成过去式。如:
draw — drew , grow — grew , know
get— got , forget — forgot feed— fed , meet — met
knew , throw — threw (动词 show 除外, show — showed )
动词原形中的 e 改为 o ,变成过去式。如:
动词原形中的 ee 改为e ,变成过去式。如:
swept
动词原形中的eep 改为ept ,变成过去式。如:keep —kept , sleep — slept ,sweep
动词原形中的eak 改为oke ,变成过去式。如:break—broke , speak— spoke
动词原形中的ell 改为old ,变成过去式。如: sell —
sold , tell— told
动词原形中的an 改为oo ,变成过去式。如:
stand — stood , understand — understood
.以ought和aught结尾,且读音是〔:t〕的过去式。如:
bring — brought , buy — bought , think —thought , catch — caught , teach — taught
以ould结尾且读音为〔ud I的情态动词过去式。如: can — could , shall - should , will 一 would
.把动词原形中的 o改为 a,变成过去式。如: come — came, become — became
在动词原形后加d 或 t 变成过去式,并且发生音变。如:
hear 〔 hi〕 — heard 〔 h :d 〕, say 〔 sei 〕 — said 〔sed 〕, mean 〔 mi:n 〕 — meant 〔 ment 〕
. 动词的过去式与动词原形一样。如:
let— let , must — must , put — put , read — read 〔 red 〕
不符合上述规律的动词过去式。如:
am , is— was , are — were , build — built , do— did , eat— ate , fall — fell , feel — felt , find — found , fly— flew , go— went , have /has — ha
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