need的情态动词与实义动词如何使用
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1. need表示“需要”或“必须”,作情态动词时,仅用于否定句或疑问句中,在肯定句中一般用must, have to, ought to,或should代替.如: You needn’t e so early. — Need I finish the work today? — Yes, you must. 注意:needn't + 不定式的完成式“表示本来不必做某事而实际上做了某事”.如: You needn't have waited for me. 2. Dare作情态动词时,主要用于疑问句、否定句和条件从句中,一般不用在肯定句中.如: How dare you say I'm unfair. He daren't speak English before such a crowd, dare he? 3. Dare和need常用作实义动词,有时态、人称和数的变化,所不同的是,作实义动词时,在肯定句中,dare后面通常接带to的不定式,在否定和疑问句中,dare后面可接带to或不带to的不定式.如: I dare to swim across this river. He does not dare (to) answer. Don't you dare (to) touch it! I wondered he dare (to) say that. He needs to finish it this evening. 实义动词:及物动词(带宾语);不及物动词(不带宾语). 实义动词意思完全,能独立用作谓语.实义动词有及物动词和不及物动词(及物动词是指后面要求有直接宾语的动词;不及物动词指后面不需要跟宾语的动词)参考网: baike.baidu/view/698681
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