APP 动词不定式的被动式为“to be +过去分词/ to have been+过去分词”。动词不定式的被动语态及其构成的短语常在句中充当主语、表语、宾语、定语、状语、补语等句子成分。如:(1)It is a great honor for him to have been elected a model worker. (作主语......（本文共 1716 字） [阅读本文] >>
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动词不定式的被动式为“to be +过去分词/ to have been+过去分词”。动词不定式的被动语态及其构成的短语常在句中充当主语、表语、宾语、定语、状语、补语等句子成分。如:(1)It is a great honor for him to have been elected a model worker. (作主语......（本文共 1716 字） [阅读本文] >>
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