1在一般现在时中，当主语为第三人称单数时，动词要用“s”型（即第三人称单数形式）。
i）在动词尾直接加 s。如：play—plays， want—wants， work—works， know—knows， help—helps，get—gets
ii）以字母s、x、sh、 ch 、或o结尾的动词加-es；如：
guess—guess， fix—fixes， teach—teaches， brush—brushes， go—goes，do—does，watch—watches，catch—catches
iii）以辅音字母＋y结尾的动词，先变y为i，再加-es。如：
study—studies，carry—carries，fly—flies，worry—worries
【过去式的变化规则】
i> 一般情况下，在动词原形后直接加ed。如：wanted，played。
‘ii> 以不发音的字母e结尾的动词，直接加d。如：hoped，lived。
iii> 重读闭音节气滞血瘀单词需双写最后一个辅音字母，再加ed。如：stopped,shipped。
iiii> 以辅音字母+y结尾的动词变y为i，再加ed。
如：studied，worried。
iiiii> 有些动词不符合上面的规则，需要特殊记忆。
不规则动词巧记表
AAA型 过去式、过去分词与原形一致
原形 过去式 过去分词 词义
cut cut cut 切、割 shut shut shut 关、闭（门窗）
put put put 放置 let let let 让
t t t 设置韩非子全文及译文 hit hit hit 撞击
hurt hurt hurt 受伤；疼痛 cost cost cost 值…钱；花费
read [ri:d] read [red] read [red] 朗读；阅读
AAB型 过去式与原形一致
beat beat beaten 击败
ABA型 过去分词与原形一致
run ran run 跑步；逃跑 come came come 来
become became become 变得；成为
ABB型 过去式与过去分词一致
buy bought bought 买
fight fought fought 打架；打仗
think thought thought 想；认为
ek sought sought 寻找；探究
bring brought brought 带来
catch caught caught 抓住；接住
teach taught taught 教；教书
lend lent lent 借出
nd nt nt 送；派遣
美国军火商spend spent spent 花费（时间、金钱）
build built built 建设；建立
feel felt felt 感觉；摸起来
leave left left 离开
keep kept kept 保持；保留
sleep slept slept 睡觉
oversleep overslept overslept 睡过头
sweep swept swept 打扫
mean [mi:n] meant [ment] meant [ment] 意思是
learn learnt / learned learnt /learned 学；学会
burn burnt / burned burnt / burned 燃烧；烧伤
hear [hiE] heard [hE:d] heard [hE:d] 听见
lead led led 领导；致使
招商部mislead misled misled 把…引错方向
feed fed fed 喂养；喂食
flee fled fled 逃跑 meet met met 遇见；碰到
shoot shot shot 射击
light lit / lighted lit / lighted 点燃
get got got 获得；得到 win won won 获胜；赢得
sit sat sat 坐下 dig dug dug 挖掘
stick stuck stuck 刺；戳 hang hung hung 悬挂
hang hanged hanged 绞死 ll sold sold 出售
tell told told 告诉 smell smelt smelt 闻；嗅
spell spelt spelt 拼写 hold held held 拿着；握住
find found found 找到；发现 stand stood stood 站立
understand understood understood 理解
lay laid laid 下蛋 pay paid paid 付款
say [i] said [d] said [d] 说
have /has had had 有 make made made 制作
shine shone / shined shone / shined 照耀
lo [lu:z] lost [lRst] lost [lRst] 丢失
ABC型 原形、过去式、过去分词不一致
begin began begun 开始 drink drank drunk 喝；饮
ring rang rung 铃（响）；打电话
核潜艇之父sing sang sung 唱歌 sink sank sunk 下沉
30万韩币swim swam swum 游泳 blow blew blown 吹；刮风
fly flew flown 飞；放（风筝）
know knew [nju:] known 知道；懂得
grow grew grown 种植；生长 throw threw thrown 扔；投
draw drew drawn 绘画 show showed shown 出示；给…看
break broke broken 打破；不服从
speak spoke spoken 说话 steal stole stolen 偷
choo cho chon 选择 freeze froze frozen 冻结
wake woke woke / woken 醒来；唤醒
forget forgot forgotten 忘记 take took taken 拿走
mistake mistook mistaken 错拿
shake shook shaken 摇动；握（手）
eat ate eaten 吃 fall fell fallen 落下；摔倒
ri ro rin [rizn] 上升；上涨
drive drove driven [drivn] 驾驶 give gave given 给
forgive forgave forgiven 原谅 e saw en 看见
爱如深渊ride rode ridden 骑（车、马） hide hid hidden 躲藏
bite bit bitten 咬
forbid forbade / forbad forbidden 禁止；不许
write wrote written 书写 bear bore born 忍受
tear tore torn 撕破 wear wore worn 穿、戴（衣帽等）
am / is was been 是 are were been 是
do / does did done 做 go went gone 去
lie lay lain 躺；卧
情态动词的过去式
must must 必须 推广业务can could 能够；会
shall should 应当 will would 将；会
