约1290字。
　　高中英语语法总结大全之动词的语态
　　动词的语态
　　语态有两种：主动语态和被动语态。
　　主语是动作的发出者为主动语态；主语是动作的接受者为被动语态。
　　1）若宾语补足语是不带to 的不定式，变为被动语态时，该不定式前要加"to"。此类动词为感官动词。
　　feel, hear, help, listen to, look at, make, observe, see, notice, watch
　　The teaade me go out of the classroom.
　　--> I was made to go out of the classroom (by the teacher).
　　We saw him play football on the playground.
　　--> He was seen to play football on the playground.
　　2）情态动词+ be +过去分词，构成被动语态。
　　Coal can be used to produce electricity for agriculture and industry.
　　let 的用法
　　1）当let后只有一个单音节动词，变被动语态时，可用不带to 的不定式。
　　They let the strange go.---> The strange was let go.
　　2）若let 后宾补较长时，let 通常不用被动语态，而用allow或permit 代替。
　　The nurse let me go to see my ate in the hospital.
　　----> I was allowed / permitted to see my ate in the hospital.
　　短语动词的被动语态
　　短语动词是一个整体，不可丢掉后面的介词或副词。
　　This is a photo of the power station that has been set up in my hometown.
　　My sister will be taken care of by Grandma.
　　Such a thing has never been heard of before.
　　表示"据说"或"相信"的词组
　　believe, consider, declare, expect, feel , report, say, see, suppose, thinnderstand
　　It is said that…据说
　　It is reported that…据报道
　　It is believed that…大家相信
　　It is hoped that…大家希望
　　It is well known that…众所周知
　　It is thought that…大家认为