Uniforms look ugly on us. 我们穿者制服很难看。 C 在be worth doing 中，doing表被动意义。
This book is worth reading.这本书值得一读。
D want/need/require+doing相当于want/need/require to be done ,to be done 表示不定式的被动语态。 My bike needs repairing=My bike needs to be repaired.我的自行车需要修理。 2 被动语态和系表结构的区别
(1) 被动语态表示以主语为承受者的动作，而系表结构表示主语的特点或所处的状态。 The shop is closed at 9:00 p.m. (动作) 这个商店九点关门。
The shop is closed today. (状态) 这个商店今天不开门。
(2) 系表结构中的过去分词常有固定的介词搭配，被动结构中没有。 Miss Wang is satisfied with us.（系表结构）王老师对我们很满意。 (3) 系表结构中的过去分词可以被副词修饰
She’s so worried about her exams. （系表结构）她非常担心她的考试。
(4) 系表结构通常只有一般现在时和一般过去时，而被动语态结构则可用于多种时态。 双重所有格与of所有格的区别
He is a friend of your father s. (强调你父亲的朋友不止一个)
（强调他对你父亲的友好）
A brothers B brother s C brothers D brother
2 As China grows stronger and stronger, Chinese in more and more schools out of our country. A teaches B is taught C has taught D was taught 3 The Olympic Games every four years. A are held B were held C are holding D will hold
4 — I feel very happy that I to be the host. — Congratulations!
B am chosen
C was chosen
D have chosen
—No，． A．am not invited B．wasn t invited C．haven t invited D．didn t invite 2．Chinese by more and more people in the world now. A．is spoken B．is speaking C．speaks D．spoke 3. It is said that potato chips by mistake about a hundred years ago． A．invent B．invented C．are invented D．were invented 4.This school has a long history．100 years ago． A．builds B．built C．was built D．has built
易混点清单—表示时间和方位的常用介词