football, play, world
Football is played all over the world.
use, for, photo Cameras are used for taking photos.
2. They bought ten computers last term.
Exercises:
1.Many people speak English. English is spoken by many people.
2.People used knives for cutting things. Knives were used for cutting things.
4.Amy can take good care of Gina .
Gina can be taken good care of by Amy.
情态动词: S+ can/may/must/should + be+过去分词
1.He can take care of the baby.
The baby can be taken care of by him.
1. I think one day books may _b_e_r_e_p_l_a_ced (replace) completely.
2. My bike _h_a_s_b_e_e_n__le_f_t (leave) at school, so I have to take the bus to school today.
Some workers are painting the rooms now.
The rooms are being painted by some workers now. 现在进行时: S+ am/is/are + being +过去分词