人教版九年级英语上册《When was it invented?》SectionA PPT课件(第1课时)，共17页。
Look at the things below. In what order do you think they were invented? Discuss them with your group. Then number them [1-4](1=first, 4=last).
A:I think the TV was invented before the car.
B:Well, I think the TV was invented after the car.
Student B, cover the dates. Student A, ask Student B
when the things in the picture in 1b were invented.
Then change roles and practice again.
A:When was the telephone invented?
B:I think it was invented in 1876.
Language Points
1.invent的用法
invent v. 发明,invention n. 发明,inventor n. 发明者。
e.g.:Edison was a great inventor.He invented a lot of things.
【辨析】 invent,discover,find与find out
①invent 意为“发明，创造”，主要通过想象、研究、劳动创造出前所未有的东西，尤指科技上的发明创造。
②discover 指发现或偶然发现原来就存在但一直未被认识的事物。
③find 强调寻找的结果，即“找到”，通常指偶然发现。
④find out 指经过观察、调查，把某事、某物查出来，搞清楚、弄明白。
2. Is it really such a great invention?
such 形容词，意为“这样的，如此的”，常用在句中作定语，
其结构为“such (a/an) +adj.+n.”。
e.g.:There’s no such thing as a free lunch.
Why do you buy such expensive clothes?
3.Think about how often it’s used in our daily lives.
daily 形容词，意为“每日的，日常的”，用作lives的定语。
e.g.:What is your daily work?
daily还可以作名词，意为“日报”。
People’s Daily 《人民日报》 China Daily《中国日报》
Exercise
一、单项选择。
( )1.Flash light can be used _____ clearly in the dark.
A.for seeing B.to seeing
C.looking D.for looking at
( )2.—When was the car invented?
—It _____ in 1895.
A.invented B.is invented C.was invented
( )3.The computer was invented _____ lives.
A.as our day B.in our day
C.as our everyday D.in our daily
( )4.Computer is _____ a great invention that it’s _____ the world a lot.
A.so;changing B.such;changed
C.such ;change D.so;changed
二、用所给词的适当形式填空。
1.The teacher’s office _______ (clean) by us yesterday.
2.The ______ (invent) has a lot of _________(invent).
3.MP3 is used for _________ (play) music.
4.—Can you help me?
—With ________(please).
… … …
关键词：《When was it invented?》PPT课件免费下载，.PPT格式；
