动词的基本形式(principal forms of the verb)
1) 英语动词的四种基本形式 它们是动词原形(room form of the verb),过去式 (past tense form), 过去分词 (past participle)和现在分词 (present participle)。这四种形式和助动词一起构成动词的时态、语态和语气。
原形 过去式 过去分词 现在分词 work worked worked working write wrote written writing have had had having do did done doing
2) 动词原形 动词原形就是词典中一般给的动词的形式,如be,have,do,work,study等。
3)动词过去式和过去分词的构成有规则的和不规则的两种。规则动词(regular verb)的过去式和过去分词,由在原形后面加词尾-ed构成。
[注] 少数双音节动词,尽管重音在第一个音节,仍双写末尾的辅音字母,然后再加-ed。如:
5travel-traveled 5level-1evelled