初中被动语态讲解ppt精选.ppt

Trees must be planted in Spring. The hole must be dug large enough but not too deep. Put the tree into the hole and it must be kept straight. Push the earth back to the hole and it must be pushed hard with your feet. Knock a long and strong stick into the earth beside the tree and it must be kept straight. Trees can be tied to the stick with a rope. And they must be watered well. Cindy 英语动词有两种语态： 主动语态 (the Active Voice) 被动语态 (the Passive Voice) A. 主动语态表示主语是动作的执行者。 B. 被动语态表示主语是动作的承受者。 We planted the tree. The tree was planted by us. 注：后面能接宾语的动词才有被动语态 * We speak English. 主语 谓语 宾语 English is spoken by us. 主语 谓语 宾语 主动语态 被动语态 They cleaned the classroom yesterday. 昨天他们打扫了教室。 The classroom was cleaned by them yesterday. 昨天教室被他们打扫了。 * 1. 一般现在时：is / am / are + 及物动词的过去分词 2. 一般过去时：was / were + 及物动词的过去分词 3. 现在/过去完成时：has / have/had + been + 及物动词的过去分词 4. 一般将来时：will+ be + 及物动词的过去分词 5. 含有情态动词：情态动词+ be + 及物动词的过去分词 6. 现在进行时：am / is / are + being + 及物动词的过去分词 歌诀：被动语态be字变，过去分词跟后面 * (一)被动语态基本用法: 当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。 * be + 过去分词 (二)被动语态的基本结构: 有各种时态的变化 * 1.规则动词的过去分词： 1)一般情况在动词原形后加-ed watch---watched 2)以不发音e结尾的加-d practice---practiced 3)以辅音加y结尾的，去y变i加-ed study---studied 4)以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed stop---stopped 2.不规则动词的过去分词： am is are was were been have has had do done write written go gone 动词过去分词的变化: * [1]. Now English ____ by more and more people all over the word. A. speaks B. is spoken C. was spoken 一般现在时的被动语态： 主语+am / is / are + PP * [2]. The lost boy ____ at the street corner last night. A. was found B. is found C. was looked for 一般过去时的被动语态： 主语+was / were + PP * [3]. More man-made satellites ____ in the future. A. will send up B. will be sent up C. are sent up 一般将来时的被动语态： 主语+will + be + PP 主语+be going to + be + PP * [4]. Three bridges ____ since last year. A. hav