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1、need的用法,一用作实义动词 need既可用于肯定句，也可用于否定句和疑问句(助动词是do或does). He needs your help. 肯定句 He doesnt need your help.否定句 Does he need your help?疑问句 -Yes, he does. -No, he doesnt.,1need sth. (名词，代词) 1). We need a great deal of money now. 我们需要和多钱。 2). They dont it any more. 他们不再需要它了。 3). Does your father need any h
2、elp? 你爸爸需要帮助吗?,2sth need doing (含被动的意义) = sth need to be done 例如： 1). The door needs painting. = The door needs to be painted. 那扇门需要油漆一下。 2). Your car needs mending. = Your car needs to be repaired. 你的车需要维修了。,3need to do sth. 表示有义务或责任去做某事。如： 1). What do we need to take for the picnic? 野餐我们需要带些什么？ 2)
3、. Will we need to show our passports? 我们需要出示护照吗？ 3). You need to take good care of your mother. 你要好好照料你妈妈。,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实义动词一起构成复合谓语，并且这个实意动词要始终是动词原形。 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。,二用作情态动词 need + 动词原型 (用于由if或whether引导的宾语从句中) 1). I wonder if I need go t
4、o GZ again. 我考虑是否要再去一次广州。 2. need not + 动词原型 (否定句) 2). There is enough time. You neednt hurry. 有的是时间，你不必着急。,3. Need I wash the bowl? (用于疑问句) -Yes, you must. (肯定回答) -No, you neednt. (否定回答) 1). Need I type this letter again? 我需要重新录入将这封信吗？ 2). -Must I hand in my homework now? 现在我必须交作业吗？ -Yes, you must.
5、 对，你必须。 -No, you neednt. 不，你不必。,三用作名词 need作为名词，含义为“缺乏，需要”；其复数表示“基本需要”。 Its no need doing sth 做没用 1). Theres no need for you to try again. 你不必再尝试了。,2. in (great) need of（急需） 2). The factory is in great need of funds. 那家工厂急需资金。 = The factory is lack/short of funds. 3. meet the needs of(满足的需要) 3). He had to work hard to meet the needs of his family. 他不得不努力工作来满足他家人的需要。,The End,
