Unit When was it invented?
一、 重点单词：
动词：mention, doubt, divide
名词：electricity, pleasure, smell,
副词：nearly
二、 重点短语:
by accident not…until less than
take place even though without doubt
all of a sudden by mistake in the end
divide…into the number of look up to
三、 重点句型
I think the TV was invented before the car.
It is said that a Chinese ruler called Shen Nong first discovered tea as a drink..
四、 重点语法
一般过去时的被动语态
一、掌握一般过去时的被动语态的概念及构成
一般过去时的被动语态表示过去某一时间的被动动作或过去经常性、习惯性的被动动作，由“主语 was / were 及物动词的过去分词 by 动作执行者”构成，无需说明动作执行者时可省去“by 动作执行者”。
例：This bridge was built in October last year. 这座桥是去年十月份建的。
These cakes were made by my mother last night. 这些蛋糕是我妈妈昨天晚上做的。
The girl said she was often beaten by her brother. 女孩说她经常被她兄弟打。
二、掌握一般过去时的被动语态句型的变换方法
一般过去时被动语态句型变换应围绕was, were进行，
否定形式应在其后加not,
一般疑问句形式应将其提至句首，
特殊疑问句形式应将一般疑问句置于特殊疑问词后面，
反意疑问句形式应保留was / were。如：
His computer was not stolen by thieves last night. 他的电脑昨天晚上没有被小偷偷走。
Was your homework finished in time yesterday evening? 昨天晚上你及时完成家庭作业了吗？
When was your letter written? The day before yesterday? 你的信是什么时候写的？前天吗？
Why was this problem not worked out by you? 为什么你没有解出这道试题？
Your bike was not repaired last night, was it? 你的自行车昨晚没有被修理，是吗？
三、掌握一般过去时的被动语态疑问句的回答方法
肯定回答用“Yes, ... was / were.
否定回答用“No, ... wasn’t / weren’t.”;
特殊疑问句应抓住特殊疑问词进行回答，可用简略方法，也可用完整方法;
反意疑问句也应用“Yes, ... was / were.”或“No, ... wasn’t / weren’t.”进行回答。如：
—Was your office cleaned yesterday afternoon? 你的办公室昨天下午打扫了吗？
—Yes, it was. / No, it wasn’t. 是的，打扫了。/ 不，没有打扫。
—Were your rooms painted again last week? 你的房间上周重新粉刷了吗？
—Yes, they were. / No, they weren’t. 是的，重新粉刷了。/ 不，没有重新粉刷。
—When was your brother sent to work in Beijing? 你兄弟是什么时候被派到北京去工作的？
—Last year. / He was sent to work in Beijing last year. 去年。/ 他是去年被派到北京工作的。
—Where was the party held last Sunday? 上周日聚会在哪儿举行的？
—At home. / It was held at home. 在家里。/ 在家里举行的。
—Your debt was paid off at last, wasn’t it? 你所欠的债最终被还清了，是吗？
—Yes, it was. / No, it wasn’t. 是的，被还清了。/ 不，没有被还清。
五、 课文精讲
1、I think the TV was invented before the car. 一般过去时的被动语态
think后如果接表否定意义的宾语从句，则要使用“否定转移”，有此用法的词还有believe,suppose,guess等。例：I don’t think Jim will win the competition..
2、They’re used for…它们被用来···
used to do 过去常常做
be used to doing习惯于做
be used for.. 被用来做….
3、For example,it mentioned that the zipper was invented by Whitcomb Judson in 1893.
Mention提到，说到，常用短语：mention … to sb 意为“ 跟某人提及······”
4、It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink.
It is said that….据说….., It is believed that….人们相信、认为…,
It is reported that…据报道…. It is considered that…据认为…
5、In England,tea didn’t appear until around 1660,but in less than 100 years,it had become the national drink.
“ not …until , ”直到···才····该结构与非延续性动词连用，如go,come,leave,arrive,move,realize , understand, reach,lend,borrow等。例：
I didn’t go to bed until 11 o’clock last night..
“less than” 少于 “more than” 多于，超过
6、The earthquake happened all of a sudden,but luckily the villagers were brought to a safe place.
happen,突然发生的情况，take place ，发生，举行 举办，有原因有安排的事发生
all of a sudden 突然，猛地，相当于suddenly.
Luckily幸运地，相当于 fortunately，通常放句首。
例 Luckily,,I’ve arrived the school when it rained heavily.
7、The customer was happy in the end.
in the end 最后 终于，相当于at last ,finally.
by the end of… 到···为止， 不迟于，常用于完成时。
at the end of … 在···底\尽头 The park is at the end of the road .
8、Basketball was invented by a Canadian doctor named James Nasismish,who was born in 1861.
“who was born in 1861” 是非限制性定语从句。
9、Dr.Naismith divided the men in his class into two teams and taught them to play his new game.
devide…into .. 把···分成···
teach sb. To do sth. teach oneself 自学
10、The number of foreign players,including Chinese players,in the NBA has increased.
the number of …. ···的数量 后面谓语动词用单数形式
a number of … 许多… 作主语时 谓语动词用复数形式。
the end
