Unit6 When was it invented单元语法精练与写作专练 2025-2026学年人教版（2012）英语九年级全册

Unit6 When was it invented单元语法精练 将下列句子变为被动语态。（一般过去时被动语态专项练习） 1. We celebrated the first Earth Day in 1970. _______________________________________________________________________________ 2. Mr. Wu often mistook Lily for Amy in the past. _______________________________________________________________________________ 3. Tom divided the cake into halves. _______________________________________________________________________________ 4. My grandma covered the food with a piece of cloth. _______________________________________________________________________________ 5. Factories threw rubbish into rivers a few years ago. _______________________________________________________________________________ 6. The teacher put some test papers on the desk. _______________________________________________________________________________ 7. She translated the novel into English. _______________________________________________________________________________ 8. The government set up a warning sign at the crossing last week. _______________________________________________________________________________ 9. Tom didn’t do homework last night. _______________________________________________________________________________ 10. My sister didn’t turn on the TV after she entered the room. _______________________________________________________________________________ 11. Her daughter didn’t stick the posters on her bedroom wall. _______________________________________________________________________________ 12. Did you put up the photo on the wall of the bedroom? _______________________________________________________________________________ 13. Did your daughter shut all the doors before leaving the room? _______________________________________________________________________________ 14. When did he notice his father reading the newspaper yesterday? _______________________________________________________________________________ 15. How many medical workers did the hospital send to Africa? _______________________________________________________________________________ 单元写作专练 [写作目标]本单元围绕话题"Inventions"展开写作教学活动，涉及发明物的历史及用途，也涉及科普知识与技术等内容。写作命题多为说明文，重点是抓住事物的特征、功能和用途。写作中主要运用一般过去时的被动语态。 [话题仿写]假如你是张星，就读于一所国际学校，在你校的"小小发明家"活动中，为赢得"最佳创意奖"，你需要代表你们小组向评委们介绍你们的发明。请你用英语写一篇短文，为发言做准备。 内容提示: What's your invention? What's it used for? What advantages does it have? (根据以上素材补全写作范文) Good morning, dear judges. I'm very glad to introduce our invention-a smart dustbin to you. (1)________________________________________(它由我和我的小组成员发明) four months ago.(2)________________________________________(它不仅能提醒人们将垃圾扔进垃圾箱), but can also be used for helping people sort waste. It is 55 centimeters long, 50 centimeters wide and 80 centimeters tall. How does it work? First, its special camera will scan the waste. Then the speaker will tell people which dustbin they need to throw the waste into.(3)________________________(如果人们没有将垃圾扔进垃圾箱), the ultrasonic sensor will detect the waste and the speaker will remind people to pick up the waste and put it into the dustbin. It can be put in a lot of places like parks and schools.(4)________________________________________(你想知道它的价格吗)?It's 1,200 yuan. Our invention can call on people to protect the environment.(5)________________________________________(小小举动真的能对我们的环境产生巨大影响). That's all.Thanks for listening. [实战演练]假如你是李华,报名参加了国际中学生发明创新大赛,并且将在大赛中向评委介绍你的发明。请你根据下面内容提示，用英语写一篇短文，为你的发言做准备。 内容提示: What's it and when was it invented? What does it look like? What's it used for and how does it work? .... 注意:文中不得透露个人真实信息;词数100词左右;开头和结尾已给出，不计人总词数。 Dear judges, I'd like to introduce my new invention to you. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ That's all.Thanks for listening. 学科网（北京）股份有限公司 $