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1·Change the attributive clause in the following sentences into participial phrase.

把下列句中的定语从句改为分词短语。

2·To avoid using dangling participles, one should remember that a participle or a participial phrase must follow closely the antecedent it qualifies.

要避免“半天吊”分词，请记着︰分词或其词组必须紧跟其前辞。