Unit6 When was it invented ?
重点短语
1. Its my pleasure.= My pleasure.我的荣幸
2. seem+to+动词原形好像做某事
3.such a great invention如此伟大的一项发明
4.think of = think about想到，考虑
5.in our daily lives在我们的日常生活中
6.in my daily life在我的日常生活中
7.have a point有道理
8.by accident偶然地，意外地
9.over an open fire在篝火上
10.lt is said that据说
11.It is believed that人们相信
12.fall into(过去式fell into)=drop into掉进..
13.in the 19th century在19世纪
14. spread to other countries传播到其他国家15.at a low price以很低的价格
16.bring(brought) sth. to sp.把某物带到某处
17.all of a sudden突然地
18.less than少于，不到
more than = over超过
19.without doubt毫无疑问
20.at that time在那时
21. advise sb (not) to do sth建议某人(不要)做事
22. start doing sth开始做某事
23.work on sth致力于某事
24.(be) similar to ....相似
25.the Olympics奥运会
26.by mistake错误地，无意地
27.make a mistake犯错
28.divide ...吧...分成...
29.in the end = at last = finally最后
30.at the same time同时
重点句型
1.give sth. to sb.
I gave a pen to him.我给他一支笔。
2.give sb. sth.
I gave him a pen.我给他一支笔。
3. make sb./sth+形容词:使... 怎么样
It made me happy.它使我高兴
4.make sb./sth+名词: ...... 做.....
It made me laugh.它让我发笑。
5. not..until..直到....
l didn go to bed until I finished my work.我直到完成我的工作才去睡觉。
