Unit 6 When was it invented？Section B 课件 2023-2024学年人教版英语九年级全册

Unit 6 When was it invented? Section B 1 &1& by mistake的用法 【教材原文】Potato chips were invented by mistake.薯片是无意间被发明的。 by mistake意为“错误地；无意中”。例如： The police caught him by mistake.警察误抓了他。 【拓展】make a mistake/make mistakes意为“犯错误”。例如： He often makes mistakes in his homework.他在作业中经常出错。 2 【对点练】 我的信被误寄给另一个人了。 _____________________________________________ My letter was sent to another person by mistake. 3 &2& divide的用法 【教材原文】Dr.Naismith divided the men in his class into two teams and taught them to play his new game.史密斯博士将他班上的男生分成两队并教他们玩他的新运动项目。 divide作动词，意为“分开；分散”，通常指把整体分为若干部分，其后常接介词into构成divide… into…结构。例如： Let's divide ourselves into several groups.我们分成几个小组吧。 【对点练】 老师把我们分成三组练习对话。 The teacher________ us _____ three groups to practice conversations. divided into 4 &3& stop sb./sth.from doing sth.的用法 【教材原文】At the same time,they need to stop the competing team from getting the ball into their own basket.同时，他们需要阻止对方的球队抢到球投进自己的篮框里。 stop sb./sth.from doing sth.意为“阻止某人/某物做某事”，同义短语为keep/prevent sb./sth.from doing sth.。例如： We must stop/prevent/keep people from cutting down too many trees.我们必须阻止人们砍伐太多树木。 【对点练】 Nothing can stop him from ______（go） forward. going 5 &4& not only…but also…的用法 【教材原文】Basketball has not only become a popular sport to play，but it has also become a popular sport to watch.篮球不但成了一项人们喜欢参与的运动，也成了一项人们喜欢观看的运动。 not only…but also…常用来连接两个并列成分，当它连接两个并列的主语时，谓语动词与其临近的主语在人称和数上保持一致。当not only位于句首时，后面的主语和谓语要部分倒装。例如： Not only I but also Jack likes skating.我和杰克都喜欢滑冰。 Not only did she have a dream，but she also tried her best to achieve it.她不仅有梦想，而且还尽最大的努力去实现自己的梦想。 6 【对点练】 —What have you learned after three years' study in China,Maria? —I was taught________knowledge________good manners.( ) B A. either;or B. not only;but also C. between;and D. not;but 7 &5& the number