、规则动词(Regullar Verbs)的过去式由 动词原形+-ed"构成，具体变化有:
1. 一般的直接在词尾加 -ed 。如:want — wanted, work — worked, need — needed, clean — cleaned
2. 以不发音的 e 结尾的在词尾加-d 。如：like — liked, live —lived, u — ud, move — moved smile--smiled; hope--hoped.
注意：ie 结尾动词，直接加d: died;tied.
3. 以一个元音字母加一个辅音字母结尾的重读闭音节动词，先双写结尾的辅音字母，再加 -ed 。如：stop — stopped, trip — tripped planned;
4. 以辅音字母加 y 结尾的动词，先把y 变成i，再加-ed 。如：study — studied, carry — carried, hurry — hurried, marry — married
worried; studied. 注意：规则动词过去式加
男人无所谓忠诚“ed 后的发音规则： 在浊辅音和元音后面 [d]
二、不规则动词(Irregular Verbs)的过去式大体上归纳有以下记忆法：
1. 以t 结尾的词，过去式与原形相同。如： put — put, let —let, cut —cut, beat — beat
read — read must--must
2. 以 d 结尾的词，把 d 变成 t 。如：build — built, lend —lent, nd —nt, spend — spent
3. 以 n 结尾的词，在词后加 t 。如： mean — meant, burn — burnt, learn — learnt
4. 以 ow / aw 结尾的词， 把 ow / aw 变成 ew 。如：blow — blew, draw —drew, know — knew, grow —grew throw —threw (动词 show 除夕卜，show — showed )
5. 含有双写字母的词，将双写改为单写，在词尾加t 。如：keep — kept, sleep — slept, feel —felt, smell — smelt sweep — swept
6. 含有元音字母 o /i 的词，将o /i 变成 a 。如:come —came
become — became sing —sang,
give — gave, sit — sat, drink — drank
7 .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
8 .把重读开音节中的i 改为o，变成过去式。如：
drive —drove , ride — rode , write —wrote企业名
9.动词原形中的e 改为o，如：
玛咖片的功效get —got, forget — forgot汉日互译
10 .动词原形中的 ee 改为e，如：
feed — fed , meet — met
网络诊断11 .动词原形中的 eak 改为oke，如：
break — broke , speak — spoke
12.动词原形中的 ell 改为old，如： called [k ?ld] borrowed [b ?r??d] 在清辅音
后面
[t] helped[helpt] 在[t] [d]音后面
钙片可以长高吗[id] started['sta:tid] needed['ni:did] moved[mu:vd] pasd[pa:st] counted['kauntid] counted['kauntid]补充说明:
ll — sold , tell — told
13 .动词原形中的an改为oo ，如：
stand — stood , understand — understood
美容护肤步骤
14 .以ould结尾且读音为〔ud〕的情态动词过去式。如：
can — could , shall — should , will —would
15 .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〔i〕— said〔d〕, mean〔mi:n〕— meant〔ment〕16 .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, find — found , fly —flew ,鸡兔同笼题
go —went , have / has — had , hold — held , leave — left, make — made , may — might , run — ran , e—saw , take —took
