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人教2003课标版《Learning about Language》最新PPT课件优质课下载
一、动词的语态
语态是动词的一种形式，用来说明主语和谓语之间的关系，语态共有两种：
主语语态(active voice )——表示主语是谓语动词动 作的执行者（施动者）。
被动语态(passive voice)——表示主语是谓语动词动作的承受者（受动者）。
For example:
1. Many people speak English.
（主动）
2.English is spoken by many people.
（被动）
1. 不知道或没有必要说明动作的执行者时。
Many new top buildings have been built since 2015.
His bike was stolen last week.
2. 需要强调动作的承受者时。
He was given ten minutes to make a speech.
Chinese is taught in that school.
二、被动语态的用法
被动语态由 be +过去分词 构成，
be 随主语的人称、数、时态和语气 的不同而变化.
现以动词do 为例，列出常用的八种时态的被动语态。
三、被动语态的构成
1. The problem is solved.
2. The flowers were sold in no time.
3. Some students will be sent to America for
further training.
4. A new library is going to be built here.