怎么把单词改成过去式.怎么改!

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怎么把单词改成过去式.怎么改!
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怎么把单词改成过去式.怎么改!
怎么把单词改成过去式.
怎么改!

怎么把单词改成过去式.怎么改!
过去式是动词而言的,它分为两种; 一种是规则动词,另一种是不规则动词.规则动词变为过去式时,分为几种:1.直接在动词后加ED.2.以字母E结尾的加D.3.重读闭音节的要双后面的辅音字母再加ED.4.以辅音字母加Y结尾的动词先把Y改为I再加ED.
不规则动词的过去式就需要强加记忆了,基本上没有什么规律.

1、一般情况加ed
2、辅+y去y加ied
3、重读闭音节双写尾字母
4、不规则见预备第二学期英语书P103

规则变化
1.加ed work-worked talk-talked
2.以e结尾的加d live-lived free-freed
3.辅音字母+y结尾,变y为i加ed try-tried study-studied
4.一个元音+一个辅音结尾,且音节重读 末尾双写,加ed
stop-stopped chat-chatted
5.其它加...

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规则变化
1.加ed work-worked talk-talked
2.以e结尾的加d live-lived free-freed
3.辅音字母+y结尾,变y为i加ed try-tried study-studied
4.一个元音+一个辅音结尾,且音节重读 末尾双写,加ed
stop-stopped chat-chatted
5.其它加ed lack-lacked open-opened
不规则变化
begin-began feel-felt come-came eat-ate

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