u7_A课件.ppt

4．— I really____ your health, dear grandpa. — Dont ________ me. Look! Im as strong as you. A．worry about; worried about B．worry about; be worried about C．be worried about; be worried about D．worried about; worry about 5．He____spend time on the work because it ______ already. A．doesnt need; is finished B．doesnt need to; has finished C．doesnt need to; has been finished D．neednt to; has been finished 四、按要求完成句子，每空一词。 1．They spent hundreds of years building the Great Wall. (改为同义句) ____ _____ _______hundreds of years ____ _____ the Great Wall. 2．Teachers should allow the students to have outdoor activities at school. (改为被动语态) The students ______ ____ ________ ____ have outdoor activities at school. 3．We must not take photos in the museum. (改为被动语态) Photos______ _____ __________in the museum. 4．I will ask somebody to check over my kitchen fan. (改为同义句) I will________ my kitchen fan__________ over. It took them Should be allowed to mustnt be taken have checked to build Grammar Review 主动语态与被动语态： 英语动词有两种语态，即主动语态(The Active Voice)与被动语态（The Passive Voice)。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。 e.g. 1.They make trains in Zhuzhou . Trains are made in Zhuzhou. 2.The farmers grow cotton every year. Cotton is grown by the farmers every year. 一般现在时被动语态的构成： am/is/are+及物动词的过去分词 动词过去分词的构成规则（与动词过去式构成规则一样）： 1、一般在动词原形末尾加-ed，looked played 2、结尾是e的动词加-d ， lived used 3、末尾只有一个辅音字母的重读闭音节词，先双写 这个辅音字母，再加-ed， planned ripped 4、结尾是“辅音字母+y”的动词，先变“y”为“i” ， 再 加-ed ， study---studied， carry---carried 主动语态变为被动语态的方法 第一步:将主动语态的宾语改为被动语态的主语； 第二步:将主动语态的谓语改为“be+及物动词的过去 分词”结构； 第三步:将主动语态的主语改为介词by的宾语，放在 谓语之后(有时可省略)。 如图示： They (主语）grow (谓语）tea (宾语）in the south-east of China. 被动语态: 主动语态: Tea (主语）is grown (谓语）by them in the south-east of China. 1、They speak English in Canada .(English….) 2、People use wood for making tables. （wood….） 3、They make computers in the USA.（Computers…） 4、They grow rice in