作业帮I need __(buy)a new dictionary.
来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/05/10 06:27:05
I need __(buy)a new dictionary.
to buy
再问： why?
再答： 因为need在这里作实义动词，后面加动词不定式 need to do sth需要做某事 翻译：我需要买一本新词典 need也可以做情态动词，就像can, could, must, should等词那样。此时它的用法同其他情态助动词一样：第三人称单数作主语时不加s，疑问句和否定句不用do来构成。做情态动词时，need一般接不带to的不定式。例句A: Need I lock the door when I leave? A: 我走时要锁门吗？ B: No, you needn't. Sarah will be home soon. B：不，你不需要哦。莎拉马上回家了。 =====“need”作为实义动词时，通常用法是： 人＋need ＋to do 物＋need ＋doing 物＋need ＋to be done ====='need"作为情态动词一般用于否定句、疑问句，如上述例句，很少用于肯定句(肯定句中作必要讲，而不是需要） 所以，应该填to buy
再问： why?
再答： 因为need在这里作实义动词，后面加动词不定式 need to do sth需要做某事 翻译：我需要买一本新词典 need也可以做情态动词，就像can, could, must, should等词那样。此时它的用法同其他情态助动词一样：第三人称单数作主语时不加s，疑问句和否定句不用do来构成。做情态动词时，need一般接不带to的不定式。例句A: Need I lock the door when I leave? A: 我走时要锁门吗？ B: No, you needn't. Sarah will be home soon. B：不，你不需要哦。莎拉马上回家了。 =====“need”作为实义动词时，通常用法是： 人＋need ＋to do 物＋need ＋doing 物＋need ＋to be done ====='need"作为情态动词一般用于否定句、疑问句，如上述例句，很少用于肯定句(肯定句中作必要讲，而不是需要） 所以，应该填to buy
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