Do you know?What are the Four Great Inventions in the ancient China?Unit 6 When was it invented?R 九年级上册Section A 第1 Section A (1a- 2d)Do you know when it was invented?Who was it invented by?Do you know when it was invented?Who was it invented by?1.掌握以下单词： heel, scoop, electricity, style, project, pleasure, it was invented in 1876. ② —What are they used for? —They are used for seeing at night. 3.能谈论物品被发明的时间、发明者，表达某发明的用途。Objectives Look at the things below. In what order doyou think they were invented? Discuss them with your group. Then number them 【1-4】(1= first, 4 = last). I think the TV was invented before the car. Well, I think the TV was invented after the car. 语法一 I think the TV was invented before the car. 我认为电视比汽车发明得早。 这是一个主从复合句，think后面跟了一个宾语从句。因为主句是一般现在时态，从句根据句意用了一般过去时态。 was invented意为“被发明”，此结构为一般过去时的被动语态。一般过去时的被动语态的结构为“was/were + 及物动词的过去分词”。如：These trees were planted last year. The car was bought yesterday. （2）invent做动词，意为“发明，创造”，指发明以 |
