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1、Unit 4 Topic 2 Section DTeaching aims and demands 1. Learn useful expressions: as long as, in short2. Sum up the simple past passive voice.3. Talk about new technology and inventions.REVIEW When was the car invented? It was invented in 1904. Where was it invented? It was invented in Germany. When wa
2、s the MP3 invented? The MP3 was invented in 1998. Where was it invented? It was made in Korea. PRESENTATION Listen to the tape to learn a passage about GPS. Please read after it. 1.What would you do if you lost your way in a forest? I would watch the stars or use GPS.2. How did the early explorers k
3、now where they were? They used the stars to know where they were. Read it again, then answer the question.3. What is GPS? Is it useful to us? GPS is a Global Positioning System. Its useful to us. 4. What do you think GPS will be used for in the future? It can be used to study the shape of the earth.
4、 KNOWLEDGE 1. in direction 按按/朝朝方面方面, 如如:These old tombs were lined in the sane direction. 这古墓是按同一个方向这古墓是按同一个方向排的排的. That motor bike hit a truck coming in the opposite direction. 那辆摩托车撞上了一个辆迎面南明来的那辆摩托车撞上了一个辆迎面南明来的卡车卡车.2.work (well)奏效奏效,起作用起作用,产生影响产生影响,如如:The medicine worked well .药物奏效药物奏效了了.The plan
5、 works well.这项计划执行这项计划执行得好得好.3.lose ones way =get lost =be lost 迷路迷路.如如: We lost our way there ,so we had to ask a policeman for help.在那儿我们迷在那儿我们迷了路了路,所以只好向警察求助所以只好向警察求助.4. as long as 意思为只要意思为只要, 如如: You can go out to play as long as you stay in the backyard. 只要你不出后院只要你不出后院, 你可以到你可以到室外玩室外玩.As long a
6、s 放在时间段的前面放在时间段的前面,表示长达表示长达, 相当于相当于for, 如如: I have taught English as long as nine years. 我已经教英语我已经教英语9年了年了.PRACTICE 1. be made of / from / in / by 2. be used for doing something3. come true4. It is said that 5. DNA is the same in every part of your body. 6. be similar to7. No one knows for certain.
7、GRAMMAR FOCUS 一般过去时的被动语态一般过去时的被动语态.一般过去时的被动语态一般过去时的被动语态: 基本形式基本形式: be的过去式的过去式 was/were + 及物动词的过去及物动词的过去分词分词. 如如: when was it made?1. 陈述句陈述句: was/were + 过去分词过去分词. The PRC was founded in 1949.2. 疑问句疑问句: Was/Were + 主语主语 + 过去过去分词分词+ ? Was it made in China? Where was the computer made?3. 否定句否定句: was +not
8、 / were + not + 过去分词过去分词 Her books werent stolen yesterday.EXERCISE ( ) 1 .Please pass me another cup. This one_. A. is broken B. is breaking C. broke D. broken( ) 2 .The story books_ by the writer in the 1960s. A. are written B. were written C. are writing D. were writingAB( ) 3. What time _ the do
9、or _ every day? A. does; closed B. does; close C. is; closed D. /; close( ) 4 Can he _ himself? A. get dress B. get dressed C. gets dressed D. instead of( ) 5 He fell from his bike and _.A. is hurt B. gets hurt C. got hurt D. hurt C CB C( ) 6 Lookout, please keep away from the fire, or your trousers
10、 will_A. burnt B. burn C. burning D. get burnt ( )7 The apple_ very sweet.A. is tasted B. taste -C. tastes D. are tasting ( ) 8 You_ more beautiful in the light blue shirt.A. see B. watch C. look D. look atDC C1. 早期的探险者发现天上的星星是很早期的探险者发现天上的星星是很好的路标好的路标.The early explorers found that the stars in the
11、sky were good landmarks. 2. 利用星星利用星星, 人们就能发现他们在哪人们就能发现他们在哪, 他们正在朝哪个方向走他们正在朝哪个方向走.Using the stars ,they could find out where they were and in which direction they were going.3. 但在其余时间里但在其余时间里, 这种方法就不适用这种方法就不适用了了.But it didnt work so well during the rest of the time. 4.你认为将来全球定位系统将被用来你认为将来全球定位系统将被用来做什么做什么? What do you think GPS will be used for in the future.
