The dishes need be cleaned carefully. (错误)
The dishes need cleaning carefully. (正确)
The dishes need to be cleaned carefully. (正确)
如:The sofa needs cleaning again. (= ... needs to be cleaned ...) 那张沙发又需要清洗一下了。(摘自《牛津英语用法指南》第四版532.5)
如果把 dishes 改为否定意义,以下三句都正确:
No dishes need be cleaned carefully.
No dishes need to be cleaned carefully.
No dishes need cleaning carefully.
【注意】
1. 在肯定意义的句子中,need 不能用作情态动词,只用作实意动词。
2. need 接主动形式的动名词作宾语,并不关心它的主动还是被动,而是把这个动名词视为“名词”(指:清洗行为)看待。
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