学科:高中英语 版本:人教版
年级:高三
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级别:教案
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发布时间:2008-09-23
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资源简介:高中英语语法被动语态的用法
一. 何时使用被动语态
1. 不知道谁是动作的执行者或没有必要
如:Paper is made from wood.
The house is quite old. It was built in 1950.
He was wounded in the fight.
2. 需要强调动作的承受者时
如:Calwlator can't be used in the maths exam.
Books and newspapers in the reading room mustn't be taken away.
He was awarded first prize in that contest.
3为了使语气婉转,避免提及自己或对方而使用被动语态,或由于修饰的需要,使用被动语态,使句子得以更好的安排。
如:The construction of the new lab must be completed by the end of next month.
Electricity is used to run machines.
二. 被动语态的构成
1. be+done 可以是被动语态,也可以是系表结构形式。被动语态中,done可以带by短语,而系表结构中done相当于adj. 不带 by短语。
如:The question is settled. (系表结构)
Such questions are settled by us. (被动语态)
The composition is well written. (系表结构)
The composition is written with great care . (被动语态)
The job was well done. (系表结构)
The job was well done by a skilled worker. (被动语态)
2. 许多verbs(broken, interested, shut, worried), 既可以用做adj.也可以在被动语态结构中做过去分词。句中如果有by,通常是被动语态。
如:I was worried abeutyou all night. (表状态)
I was worried by mosquitoes all night. (表动作)
The glass was broken by Jack. (表动作)
The glass is broken. (表状态)
I was frightened by his ghost story.
She was frightened at the sight of a snake.