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1·The past participle of regular verbs ends in '-ed'.

规则动词的过去分词以-ed结尾。《牛津词典》

2·The past participle used as object complement.

过去分词用作宾语补足语。

3·Used with past participle to form passive voice.

与过去分词连用，成被动态。

4·Bought is the past tense and past participle of buy.

买的过去式和过去的购买过去分词。

5·Give the past and past participle forms of the verbs.

写出动词的过去式和过去分词形式。

6·Learn about the Past Participle (3) : used as Adverbial.

学习过去分词的用法：用作状语。

7·Past tense and past participle of the composition method.

过去式和过去分词的构成方法。

8·Rewrite the following sentences using the past participle .

使用过去分词改写下列句子。

9·Teacher: John, what is the past participle of the verb to ring?

老师：“John，动词ring的过去分词是什么？”

10·Who knows the Past Tense and the Past Participle form of this verb?

谁知道一般过去时和这个动词的过去分词？