need用法PPT

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,need,的用法,need,need,双重身份,情态动词,实义动词,need,情态动词,1. He,neednt call,me now.,2. We,neednt go,to school on Sunday.,3.,Need,I,help,you?,4.,Need,she,do,the work at once?,5.-Must I go right now? -No, you,neednt,.,否定句,疑问句,1. need +,动词原形,2.,无人称和时态的变化,3.,用于否定句及疑问句中,4.,用于否定回答,must,的提问,用法,1,：,need,实义动词,1. We,needed to help,him relax.,2. You,dont need,to,tell,him the news.,3. The boy,needs to water,the plantd,4. Jane,didnt need to,help Kangkang.,ed,s,1. need to do (,肯定句,),2.,有人称和时态的变化,3.,否定形式要用助动词。,用法,2,：,need,实义动词,2,1. I need to clean the classroom.,2. The classroom needs cleaning.,=The classroom needs to be cleaned.,sb. need to do,sth. need doing,1. sb need + to do(,某人,),需要做某事,2. sth need doing,=sth need to be done,(,某事,),需要被做,用法,3,：,sth. need to be done,可兼做行为动词的情态动词,: need,情态动词,（,+,动词原形）,行为动词,need,1.,无人称，时态和数的变化；,多用于肯定句；,need to do sth,否定需要借助助动词,need to be done=need doing,表示被动,2.,否定句、疑问句中；,3.,常以,neednt,的形式出现；,回答,must,的提问。,Practice,1. -Must I stay at home this afternoon?,-No, you,.,A. dont B. neednt C. dont need,2. Tom,get up earlier tomorrow.,A. needs to B. need C. need to,3. Look! Your shirt is dirty.,It,.,A. need washing B. need to wash,C. needs washing,4. We,go to school on Sunday.,A. need B neednt to C. neednt,B,A,C,C,Summary,need,情态动词,（,+,动词原形）,行为动词,2.,否定句、疑问句中；,3.,常以,neednt,的形式出现；,回答,must,的提问,。,1.,无人称，时态和数的变化；,多用于肯定句；,need to do sth,否定需要借助助动词,need to be done=need doing,表示被动,Thank you !,