1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
（被动语态中的be为助动词，无意义。be可能是am , is ,
are也可能是was ,were或原形be。）
注：☆被动语态的时态是由be的时态决定的，be是什么时态，全
句就是什么时态，be后面的过去分词不变。
一、主动语态与被动语态的概念及被动语态结构
英语的谓语动词有两种语态
We speak English.
主语
谓语
宾语
English is spoken by us.
主语
谓语
宾语
宾变主,主变宾,前加by
动变被,看清be, 定时态。
主动语态
被动语态
1. Kate often sings this song.
This song is often sung by Kate.
2. They hold football games on Friday afternoons.
Football games are held by them on Friday afternoons.
3. Father often encourages me to study hard.
I am often encouraged to study hard by father .
4. We use knives to cut things /We use knives for cutting things.
Knives are used to cut things by us. Knives are used for cutting things by us.
5. The trees cover the whole mountain.
The whole mountain is covered with the trees.
? Tom broke the window.??
??