need用法解析.doc
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1、need用法一用作行为动词这种情况下,need既可用于肯定句,也可用于否定句和疑问句,构成否定句和疑问句时要借助于助动词do或does.1need sth.1). We need a lot of money. 我们需要很多钱。2). We dont need much money. 我们不需要很多钱。3). Do you need much money? 你们需要很多钱吗?2need to do sth.4). Mary needs to look after her mother? Mary需要照顾她的妈妈。5). Does Mary need to look after her moth
2、er? Mary需要照顾她妈妈吗?6). Mary doesnt need to look after her mother. Mary 不需要照顾妈妈。二用作情态动词情态动词的主要特征:没有人称和数的变化。不能单独充当谓语。情态动词必须与一个动词原形一起构成谓语。变为否定句时只需在情态动词之后加not。变为疑问句时只需将情态动词提到主语的前面。7). Need I go now? 我需要现在走吗?8). You neednt go now. 你现在不需要走。9). -Must I hand in my homework now? 现在我必须交作业吗?-No, you neednt. 不,你不
3、必。10)三自我检测 ( ) 1. They any help. A. dont need B. neednt C. need D. doesnt need( ) 2. -Must I finish work at 6:00 oclock?? -No, you . A. mustnt B. neednt C. dont need D. cant( ) 3. Tom get up early. A. needs B. need C. need to D. needs to ( ) 4. David anything to drink? A. Need, B. Needs, C. Doesneed D. Doneed( ) 5. You to the hospital tomorrow A. neednt to come B. dont need come C. dont need to come D. neednt come to
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