现在完成时及动词变化

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现在完成时定义

1. 表示过去不确定的时间发生的动作，对现在有影响。 2. 表示过去发生并持续到现在的动作。



规则动词：规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。

四点变化规则：

(1）、一般动词，在词尾直接加“ ed ”。

work---worked---worked,visit---visited---visited (2）、以“ e ”结尾的动词，只在词尾加“ d ”。 live---lived---lived,

(3）、以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“ ed ”。 study---studied---studied,cry---cried---cried

(4）、重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”。

stop---stopped---stopped,drop---dropped--dropped

不规则动词：



ABC型

原型

过去式 begin began bear bore blow blew break broke choose chose draw drew drive drove do / does did fly flew forgive forgave forget forgot freeze froze write wrote take took wear wore see saw 原型

过去式

could might should



begun born,borne blown broken chosen drawn driven done flown forgiven forgotten,forgot frozen written taken worn seen 过去分词



AB型

过去分词





原型

过去式 过去分词

give gave given go went gone know knew known grow grew grown lie lay lain ride rode ridden rise rose risen ring rang rung shake shook shaken sing sang sung be was/were been sink sank sunk swim swam swum throw threw thrown drink drank drunk 原型 过去式 will would be was/were

过去分词

can

may shall







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AAA型

原型

burst cast cut hit hurt cost

AAB型

原型

beat

特殊情况



过去式 burst cast cut hit hurt cost



过去式 beat

过去分词



burst cast cut hit hurt cost

过去分词









read



过去式 brought bought built burnt caught dug felt fought found fed got

hung,hanged heard held kept laid led lost left

beaten,beat









read

(read原形发音为/ri:d/，过去式和过去分词发音为/red/)

ABB型

原型

read

过去分词



bring buy build burn catch dig feel fight find feed get hang hear hold keep lay lead lose leave



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brought bought built burnt caught dug felt fought found fed got

hung,hanged heard held kept laid led lost left

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