2. 1 动词的语态

3. 2

4. 3 The passive voice. 被动语态 英语中动词有主动语态和被动语态两种语态. 主动 语态表示主语是动作的执行者, 被动语态表示主语 是动作的承受者, 在被动语态中动作的执行者有时 用 by 短语表示出来. 构成 被动语态的构成 : 助动词 be+ ( 及物动词的 ) 过去分词 一般现在时 一般过去时 am (is, are) + V.ed was (were) + V.ed {

5. 4 The passive voice. 被动语态 主动语态变被动语态的结构图 : Bell invented the telephone in 1876. The telephone was invented by Bell in 1876. 主语 谓语动词过去时宾语时间状语 主语谓语动词的过去分词 宾语时间状语

6. 5 写出下列动词的过去式和过去分词. see- ring- fly- drive- run- read- rise- speak- eat- throw- buy- teach- send- keep- sell- leave- win- stand- get- hear- put- come- saw-seen flew-flown ran-run rose-risen ate-eaten bought-bought sent-sent sold-sold won-won got-got/gotten put-put rang-rung drove-driven read-read spoke-spoken threw-thrown taught-taught kept-kept left-left stood-stood heard-heard came-come

7. 6 Change the following sentences into the Passive Voice 1.They make TV sets in that factory. 2.Northwest China grows the best cotton. 3.They use this room for playing Ping pong. 4.Bell invented the telephone in 1876. TV sets are made in that factory The best cotton is grown in Northwest China. This room is used for playing Ping pong The telephone was invented by Bell in 1876.

8. 7 5.The manager made them work 10 hours a day. 6.China has sent up man – made satellites into space 7. You should water trees often. 8.You must not plant trees in very dry earth. They were made to work 10 hours a day. Man – made satellites have been sent up into space. Trees should be watered often. Trees must not be planted in very dry earth.

9. 8 Fill in the blanks: Paper ( invent)_______________in A.D.105 by Cai Lun in China.It is an important part of our everyday lives,but few people ever think about how it (make) ____________.Today most paper comes from trees.However,with the concern for the environment ( 考虑到环境 ), more and more paper (produce)____________from recycled paper products. Since paper products are of different qualities,they first(sort 分类 )____________before they (recycle)_____________.The sorted material (put) _____________ into a huge machine. was invented is made is produced are sorted are recycled is put