附：过去分词的变化规则 1. 规则动词：规则动词的过去分词与规则动词的过去式的构成规则相同。 (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，双写该辅音字母，再加“ed” stop---stopped---stopped drop---dropped--dropped 2. 不规则动词 AAA 型 burst burst burst hurt hurt hurt let let let cut cut cut cost cost cost hit hit hit put put put set set set shut shut shut spread spread spread read read read(read 原形和过去分词发音为/ri:d/,过去式发音为/red/) AAB 型 beat beat beaten ABA 型 become became become run ran run come came come ABB 型 bring brought brought buy bought bought build built built burn burnt burnt catch caught caught dig dug dug feel felt felt fight fought fought find found found hear heard heard hold held held keep kept kept lay laid laid lead led led lose lost lost make made made meet met met sell sold sold shoot shot shot sit sat sat stand stood stood sweep swept swept teach taught taught tell told told think thought thought win won won ABC 型 begin began begun blow blew blown break broke broken choose chose chosen draw drew drawn drive drove driven drink drank drunk fly flew flown write wrote written forget forgot forgotten freeze froze frozen give gave given grow grew grown know knew known ride rode ridden rise rose risen ring rang rung shake shook shaken sing sang sung sink sank sunk swim swam swum throw threw thrown 课堂练习 一．用already, yet, ever, never, since, for 填空。 1. My brother has _________________ finished doing his homework. He is watching TV now. 2. M...
VIP
