【正文】
When to use the passive voice ? ?We do not know or do not need to know who performs the action. 我們不知道動作的執(zhí)行者是誰或不需 要知道動作執(zhí)行者是誰。 The lives of the patients with eye problems are improved. When to use the passive voice ? (1) This writer’s books are sold in many countries (2) Rice is grown in China. (3) Some windows were broken last night. (4) This book was published in 2021. What is this charity called in English? It is called ORBIS. What is the plane used as? It is used as a hospital. It is also used as a training centre. How many patients were operated on during Dr Ma’s last visit? During his last visit, 150 patients were operated on. Who do operations on the plane? ORBIS doctors do operations. Operations are done by ORBIS doctors. (1) On the plane, volunteer doctors do operations. (2) ORBIS doctors helped many blind people. We can also introduce who or what performs an action in the pa