行为动词:need to do 情态动词:need do(多用于疑问或否定) 注意:You don't need to go now.(行为动词)You needn't go now(情态动词) Do you need to go now?(行为动词)Need you go now?(情态动词)
第3个回答 2019-09-01
做情态动词时need后面直接跟动词原形,译为"有必要,不得不做",此时need是接物动词. 当need译为"需要,必需"时,此时need是不接物动词,结构是need to do sth. ,不接物动词无被动语态,因此用动词的现在分词表被动,即是need doing sth.例:the flowers need drinking water every day.(鲜花需要每天浇水)