| 12. 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 teacher made 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. | ||
| 12.1 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 classmate in the hospital. ----> I was allowed / permitted to see my classmate in the hospital. | ||
| 12.2 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.. | ||
