1、UNIT 2 Keeping Healthy TOPIC 3 Must we exercise to prevent the flu Section C,need的用法,need的用法： 1.实义动词 ( 有人称和数的变化） sb. + need sth.,eg. I need some help.,sb. + need to do sth.,eg. I need to sleep.,sb. + need sth. to do sth.,eg. He needs time to do homework.,sth. + need doing (表被动含义) = sth.+ need to be
2、done,eg. The house needs cleaning. = The house needs to be cleaned.,2.情态动词（没有人称和数的变化）need 用于句首构成一般疑问句或neednt才为情态动词。,注意：need作为情态动词时，后面必须接动词原形。,常用句式： Need sb. do sth?sb. neednt do sth.eg. Need I go?He neednt go home by bus.,Exercises,( ) 1. He needs _ time with his child. A. spends B. spending C. to s
3、pend D. spend,C,Exercises: ( ) 2. Tom_ some money to buy books. A. need to borrow B. needs to borrow C. needs borrow D. needs borrowing,B,Exercises: ( ) 3. You_ there today. A. neednt going B. neednt to go C dont need to go D. dont need going,C,Exercises: ( ) 4. The flowers needs_. A. waters B. to water C. watering D. watered,C,Goodbye!,
