as的用法PPT
在英语中，“as”是一个非常常用的词，它有很多不同的用法。下面是一些常见的“as”的用法： 作为介词1.1 表示身份He is known as a gr...
在英语中，“as”是一个非常常用的词，它有很多不同的用法。下面是一些常见的“as”的用法： 作为介词1.1 表示身份He is known as a great athlete1.2 表示职业She works as a teacher1.3 表示位置或状态He lives as a recluse 作为连词2.1 表示时间，与when，while连用As soon as he arrivedhe went to his roomAs he was leavingthe phone rang2.2 表示原因，与because连用As you were latewe left without you2.3 表示方式，与how连用I don't know how to solve the problemas it is very difficult AS的短语和习语3.1 as if: 好像，似乎She looks at me as if she doesn't believe me3.2 as a result: 结果是，因此As a result of the rainthe concert was cancelled3.3 as far as: 就…而言，据我所知As far as I knowhe is a good personAs far as the future is concernedwho knows what will happen? AS在定语从句中的用法在定语从句中，AS可以作为关系代词，引导限制性定语从句。此时，AS所指的先行词必须是名词或代词，而且这个名词或代词前面不能有其他的限定词。例如：Such chemicals as are used in this experiment are dangerous.（先行词为 chemicals） 这些用于这次实验的化学物品很危险As is known to allChina is a beautiful country with a long history.（先行词为 China）众所周知，中国是一个有着悠久历史的美丽国家The man who was standing in front of the car was drunk.（先行词为 the man）那个站在车前的人喝醉了The book which was written by Mark Twain is very famous.（先行词为 the book）马克吐温写的这本书很有名The film which was directed by Zhang Yimou is very popular.（先行词为 the film）由张艺谋导演的电影很受欢迎The factory which produces electrical appliances is closed for the holidays.（先行词为 the factory）生产电器的工厂因放假而关闭The house in which we live is very small.（先行词为 the house）我们住的房子很小The river which flows through Beijing is called the Yonghe River.（先行词为 the river）流经北京的河流叫做永定河The disease from which he recovered was typhoid fever.（先行词为 the disease）他从中康复的疾病是伤寒症注：以上例句中，“AS IS known TO ALL”为一个固定句型，“众所周知”；“which was…”、“who was…”则是定语从句中的“嵌套句”，表示对先行词的进一步解释说明
